And now 1 block is 50BTS, when will it be 25BTS(date?)
currency rate to USD is not stable too, right? When you try to sell BTS for USD do you always successful?
1 Block on average = 2^32 * difficulty hashes, so now it's about 1.05 billion Mhash.
25 BTC will start with block 210,000 (or something like that). The date is not known, but it may be roughly September 2012.
If you move BTC to mtgox you will succeed in selling them, at the right price.
Good, about 38 days for you can earn a video card?
It's a good deal, How much does electricity cost per 1kwh in your country?
I my country it's 0.1 usd (but electricity gard company ususlly charges 25%more ).
electricity cost could be ignore if using video card