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2781  Economy / Marketplace / Re: Margin Trading on: November 04, 2010, 01:20:21 AM
Would anyone be interested in Trading BTC/USD on margin? Like how trading is done on most forex sites?

Short selling would be nice.
2782  Bitcoin / Development & Technical Discussion / Re: PHP rpcallowip, what am I doing wrong? on: November 01, 2010, 05:18:51 PM
If bitcoin thinks the connection is not allowed, then it just ignores the connection attempt-- nothing is written to debug.log.  That's probably the right thing to do-- otherwise somebody malicious could try to fill up your hard disk by repeatedly attempting to connect to port 8332.

It is wrong to discard useful information about a potential attack.

This sort of thing is typically solved by rate-limiting.
2783  Bitcoin / Bitcoin Technical Support / Re: Sudden loss of BTC production on: November 01, 2010, 04:19:14 PM
So producing new coins is becoming hardly worth the power needed to produce it...
Exactly as predicted by satoshi.

Recently I had to shut down minting on my computer completely, because my electricity bill went crazy...


I agree, its not cost effective if you pay the bills.

... unless you own current-generation AMD/ATI GPU, of course.
2784  Economy / Speculation / Re: Bitcoin Technical Analysis on: November 01, 2010, 04:15:14 PM
If some commodity (bitcoin for example) has changed it's price significantly against some well established currency ($) shouldn't its trading volume decline? Because volume of 50 000 BTC at 0.06$ and 0.2$ represents proportionally different volume in $. It will stay the same only if the actual volume of the economy is larger.

Perhaps BTC exchangers should provide volume data in their other currencies? This will provide more realistic view in my opinion.

Many people -- myself included -- think dollar volume should be included alongside share volume, when showing stock market charts.

The same logic can easily be applied here.
2785  Economy / Marketplace / Re: We accept Bitcoins on: October 31, 2010, 06:20:07 PM
The Bitcoin Store (http://bitcoinstore.yyz.us/) accepts multiple currencies in payment, and gives out bitcoins.

The Bitcoin Store has closed.  It was a fun experiment, but only had four or five customers in its lifetime.

Bitcoin Market v2 and mtgox, once mtgox's withdrawal situation is sorted, should be suitable as instant exchange sites.  One only hopes they add market orders in addition to the current limit orders that both support.  (Yes, you can make a limit order effectively a market order, but that's the point of a market order: you shouldn't have to)
2786  Economy / Marketplace / Re: Looking for LibertyReserve on: October 30, 2010, 04:22:19 PM
I can buy liberty reserve at the post office using eforexgold  http://btco.in/2t

Transexpress http://btco.in/2u
 
Aurum Xchange http://btco.in/2v  you can also get a visa debit card for $69 which lets you spend LR wherever visa is accepted ie-sell bitcoin for LR then go shopping Smiley

It's terribly inconvenient that you shroud the URLs this way.  Using a URL shortener on a short URL just adds pointless work to your browser, and makes it more annoying to cut-n-paste URLs out of your post.

Its a habit from using twitter.  Undecided

Why do you need to copy and paste when I hyperlinked them?

I was emailing a couple of the sites to someone.  Which meant I had to click on the damn things just to find the URLs that should be been in the original post.  And with URL shrouds, you wind up defeating some of my malware checks (FireFox has a list of known malware sites using Google's API, and URL redirection obviously defeats that).

URL redirection is evil, and should be used only when you are absolutely forced to do so (such as 140 char twitter limit).
2787  Economy / Marketplace / Re: Looking for LibertyReserve on: October 30, 2010, 02:58:34 AM
I can buy liberty reserve at the post office using eforexgold  http://btco.in/2t

Transexpress http://btco.in/2u
 
Aurum Xchange http://btco.in/2v  you can also get a visa debit card for $69 which lets you spend LR wherever visa is accepted ie-sell bitcoin for LR then go shopping Smiley

It's terribly inconvenient that you shroud the URLs this way.  Using a URL shortener on a short URL just adds pointless work to your browser, and makes it more annoying to cut-n-paste URLs out of your post.
2788  Economy / Marketplace / Re: Petition for MtGox to Reduce Exposure to Loss on: October 29, 2010, 05:11:42 PM
Almost any professional currency or equity trading house has per-trade charges.

I think per-trade charges are the most fair, because it compensates the site owner if the site sees heavy activity.  It also discourages DoS'ing a bit.
2789  Economy / Marketplace / Re: Petition for MtGox to Reduce Exposure to Loss on: October 29, 2010, 03:07:25 PM
How do the major exchanges make money, surely not a charge on ever trade, right? That would kill spreads and liquidity, no? I absolutely think mtgox should monetize somehow, but anything seems better than a per trade charge. One time fee, monthly fee, deposit or withdrwal charge, advertisers, there are plenty of options. It just seems to me keeping the market as tight and liquid as possible needs to be a top priority.

What's wrong with a per-trade charge?

1 BTC/trade is nothing...
2790  Bitcoin / Development & Technical Discussion / Re: Decentralized Bitcoin scratch-off cards on: October 28, 2010, 09:45:55 PM
I'm thinking some variation of wallet-on-a-USB-stick might be a more convenient and practical way of physically exchanging bitcoins.

That would be fun:  download money from a website, in the form of a file (bitcoin wallet).

Or more likely, some text encoding format of a wallet, similar to exporting a PGP key to an ASCII file.

2791  Economy / Marketplace / Re: Looking for LibertyReserve on: October 28, 2010, 09:43:15 PM
Hi as a lot of you know mtgox recently switched to using LR as a payment processor.
The problem is I have a bunch of cash in my bank account that I need to convert to LR so people withdraw their mtgox USD. I'm trying to buy a bunch of LR on exchangezone but the process seems like it will take a couple weeks. So if anyone is holding LR could I buy it from you with a bank wire or ACH?
Thanks for any help.

If it's $10k or more, Liberty Reserve may work with you directly.

See http://blog.libertyreserve.com/2009/03/liberty-reserve-premium.html
2792  Economy / Marketplace / Re: paypal dropped mtgox on: October 28, 2010, 04:28:08 AM
mtgox, can u offer withdraws via paypal?  withdraws won't have chargebacks.  if no, then why not?

Withdrawal... from what account?

mtgox noted at the beginning of this thread that PayPal froze his account, possibly up to 180 days.  After reviewing mtgox's posts, I don't see anything that has changed that fundamental situation.

And creating a second PP account, just for withdrawals, would not only endanger the first (frozen) PP account, but would inflict additional LR->PP transfer fees on the withdrawer.
2793  Economy / Marketplace / Re: I'm buying 5,000 bitcoins!!! on: October 27, 2010, 11:31:34 PM
I think that part of your problem is that MtGox (and other markets) don't leave a publicly accessable record of the negotiations.

What would you define as negotiations?
2794  Bitcoin / Bitcoin Discussion / Bitcoin Watch: historical trade data on: October 27, 2010, 08:50:45 PM
Bitcoin Watch is now making available per-trade historical data for mtgox, bitcoinmarket PPUSD, bitcoinmarket LRUSD and bitcoinmarket PGAU.  It's in CSV text format, zipped:

     http://www.bitcoinwatch.com/trades.zip

Robot authors, please do not poll this more than once a day.  Do not consider this a real-time feed.  You do not need to download the entire history of bitcoin every 5 minutes!  If you need a real-time feed, please connect directly to the marketplace tickers themselves.
2795  Bitcoin / Development & Technical Discussion / Re: Multiple Wallets, one computer (multiple accounts) on: October 27, 2010, 07:20:43 PM
Comments:

  • Very nice, though this makes using at least one account mandatory?  If yes, I suppose we can create a default 'master' account, just like git creates a 'master' branch by convention.
  • I found it useful to label individual transactions, and will continue to find that useful even when using multiple accounts.  Labels remain useful as an ad hoc tx grouping mechanism (use case A) or an easy way to associate a user-generated (website-generated) unique transaction id with a bitcoin address (use case B)
2796  Economy / Marketplace / Re: Selling bitcoins for PayPal-EUR on: October 27, 2010, 06:01:13 PM
Updated bitcoin-otc order book for current price craziness:

     0.145 PP-Euros per BTC

2797  Bitcoin / Bitcoin Discussion / Re: A lucrative attack on bitcoin? on: October 26, 2010, 08:55:27 PM
Nice!  I stand corrected.
2798  Bitcoin / Bitcoin Discussion / Re: A lucrative attack on bitcoin? on: October 26, 2010, 08:32:56 PM

Large blocks are a valid DoS attack against bitcoin, presently.  Transaction fees kick in at higher block sizes, but it still remains quite inexpensive to flood the network, even if you are paying full TX fees right up to the 1MB (?) block limit.  I dunno about lucrative, but...
2799  Bitcoin / Bitcoin Discussion / Re: Bitcoin Learning on: October 26, 2010, 07:04:46 PM
I have invested some of my wealth in bitcoins. It's an amount I can afford to lose but it's still big enough that it would hurt if I lost it.

This has forced me to think carefully about how to backup up my wallet.dat files in a way that a) the chance of losing the data is very small and b) the chance that a third party can somehow gain access to that data is very small.

This proved trickier than I thought because a) and b) are somewhat conflicting. I was forced to learn the basics of cryptography and computer security in the process. (I strongly recommend even the non-geek Bitcoin user to read up on these topics as dauting as they may seem at first).

Agreed, though I think "average users" will choose easier routes such as mybitcoin.com.
2800  Bitcoin / Bitcoin Discussion / Re: Bitcoin Learning on: October 26, 2010, 05:54:24 PM
Scams are inevitable for the chargeback-capable forms of payment, yes.

But your potential audience is far, far larger when you accept chargeback-able forms of payment.  It then becomes a matter of trying to prevent fraud at your store, while also budgeting a percentage for crime.  That's how the Big Boys do it.

Just don't do something silly like buybitcoins.com and offer to accept chargeback-able payment in direct exchange for hard currency.
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