hi to all,
i knew about the bitcoin before but i now i want to learn more
-all this unlicensed bitcoin gambling business are not against the law because most of the states hasn't regulated the bitcoin yet? if its like that this gambling businesses can`t serve to the people in the united states and germany since they regulated bitcoin?
Online gambling in general is pretty fuzzy in the United States right now. I expect Bitcoin-based online gambling is going to be big for quite a while yet, even in countries that generally frown on gambling, due to the technical challenges involved in controlling it.
-when starting up a new bitcoin business, you put your adresses online to a place where everyone can see. so everyone could see the transactions that you do? and from that if you set up a business on gambling or maybe a service business, could people calculate your gross profit or your gross sales?
(i'm asking because if bitcoin regulated in a country and if they want to tax it, will they be able to access all the ingoing and outgoing account information?)
It's true that anyone, at any time, can look at the balance of any Bitcoin address. There are a number of ways to make it less obvious which balances belong to you. From a business perspective, one of the best solutions is to use a separate address for each transaction. Not only does this obfuscate your books to some extent, it makes it much easier to tell when a particular customer has paid.
-has any %51 attack happened in last 6 months? or has it happened any? i appreciated links to find out more on this subject.
Hasn't happened yet, and it's pretty unlikely to ever happen, though there's no guarantee. For more reading, I recommend:
http://thegenesisblock.com/the-51-attack-what-bitcoin-can-learn-from-alt-coin-experiments/https://en.bitcoin.it/wiki/Weaknesses (addresses many potential Bitcoin weaknesses, not just a 51% attack)
-when the mining becomes less profitable and then will the transactions cost money since there will be less machines to approve transactions?(i am not sure if this question makes any sense)
People will continue to pay voluntary fees on some transactions, as they already do. The theory is that increased Bitcoin adoption will continue to make transaction processing profitable even after all BTC have been mined.