GPUs for BTC is pretty much useless.
Example of someone who looked at the thread title, hit the "New Reply" button, and posted his opinion without reading anything the OP said.
XD
Actually I did read his post, and he was talking about his GPU getting 400MH/s. If he's getting 400MH/s using Scrypt, then I want what he's buying!
So there were two reasonable explanations: he mistyped (a common yet infuriating mistake), or he was mining BTC. My warning was aimed at the less likely but more absurd second option.