2. Als het monetaire uiteindelijk in elkaar stort en alle valuta's zoals de Euro en Dollar niks meer waard zijn , waar is de waarde van de Bitcoin dan nog op gebaseerd?

The current rate is 1BTC/85% Of the Current MtGox Rate (If you give me 1BTC and the current MtGox rate is $10/BTC, you get $8.50)

Before someone here reinvents http://www.bitcoinplus.com, he might give a try to the original.

I am using it on a few low traffic blogs, and it is not intrusive at all, since it runs at low priority. But in about 3 months made me 0,003 BTC, since cpu mining with javascript is efficient like sh*t.

You don't sell Bitcoins on Bitcoinica - for that you need to go to an exchange.

Bitcoinica lets you leverage 1:5 in BTCUSD.

I'll give a little example (though I'm a bit new myself), anyone can feel free to correct me:

You deposit 1 BTC when the market is at 5 USD/BTC. This gives you a margin of 5, with a tradable balance of 25. From here you can decide to long or short.  If you long it, you 'buy' BTC at X price in hopes it goes up.  If you long 3 BTC when it is at 5 USD, and it goes up to 6 USD, you've made 3 USD.  If you short it, you sell 3 BTC at 5 USD, and it goes down to 4 USD, you've made 3 USD.

But it isn't so easy.  On the right of your screen, you'll see that P/L, Net Balance, and Maintainence.

P/L is your current profit/loss.  Green is profit, red is loss. It'll start out as a loss every time (due to the spread).

Your Net Balance is your Margin + P/L. If your P/L is green, your margin will be higher than when you started. If it is red, your margin will be lower.

Your Maintainence is... somehting.  Not really sure.  BUT what I have read is that if your maintainence ever exceeds your Net Balance, you get a 'margin call'.  That means the market has gone too far from where you ordered and even with the 1:5 leverage you don't have enough to maintain your account - so it liquidates it. To prevent liquidations, be sure to set stop-loss orders.

Hope this helps!

edit: to clarify some things: you need to lock in your profits just like you stop-loss orders.  These are called 'limit' orders. Also you can choose to simply 'liquidate' your current position, which will lock in whatever the current market is (weather it be a profit or a loss)

Once your positions are cleared, you can choose to withdrawl MtGOX USD CODE or BTC.

my parents pay my electricity bills (i'm 13!)

100% profit lol!

I considered this. Unfortunately, withdrawing EUR ( in my case) is too much of a hassle, and converting my USD assets to Bitcoin to withdraw seems very risky at this point.

$30.00

and if you are out of the US please tell me why a comma is used instead of a decimal?   

I'm capable of doing web design, logo design etc and it seems that market is already being tied down by 30 other people.

All right, first reply gets me to use their referral link

No guarantees I will have time to use the site ever, but I kind of want to sometime just to say I tried it, so yeah, referral me this Batman