eg. neocoin will trade for a bitcoin after only 1 month of mining with a 800 Kh
Now-before I spend like 500 euros for a couple state of the art radeon cards to work in crossfire- what's the catch?
1 catch.
When you mine an altcoin you need to make sure there is enough volume in the exchange for you to sell the coin. It's all well and good if you can mine 10000 coins in one month, but if people aren't willing to buy it at that price then your returns go way way down. Altcoins are a whole other world
Another thing - don't crossfire your mining cards, this reduces the hashing rate. Run them side by side.
Hope this helps.