Hi, I just tried searching for:

STALKER
S.T.A.L.K.E.R.

and neither of them found Stalker.  I realize it's spelled strangely but can't you fix it so that games which are commony misspelled can be found by their alternate spelling(s)?

So then I just did the simple solution and searched through all first-person shooters...

...But it turns out that - new to me - Stalker isn't actually an FPS, as when I finally found it by searching for "chernobyl" I discovered it is apparently classified as an "action" game.  As opposed to a game wherein nothing happens, I suppose.

I don't even know why my second attempt didn't work.  Finally, searching for "chernobyl" found the game but if I'm looking for information on the Radeon 5870 I can look for:

"Radeon"
"5870"
"RV800"
"ATI"
"AMD"
"GPU"

etc...  You should have a synonym system or a, "Did you mean...." system.

Also, will you be getting Clear Sky on Impulse anytime soon?  I would prefer to buy a series of games all via the same distribution system, and Steam's got them both... Incidentially, searching for "STALKER" on Steam gives me:

S.T.A.L.K.E.R.: Shadow of Chernobyl
S.T.A.L.K.E.R.: Clear Sky
S.T.A.L.K.E.R. Trailer
S.T.A.L.K.E.R.: Clear Sky Atmosphere Trailer
S.T.A.L.K.E.R.: Clear Sky Tech Demo (I think this must be v1.0 of the game - zing)
S.T.A.L.K.E.R.: Clear Sky Trailer
THQ Collector Pack
Quake II Mission Pack: Ground Zero
THQ Action Pack

That's how search results are done.  I know I'm being harsh but I feel silly jumping through hoops to support a small company when it's made so difficult for me to do so.  How many people just searched for "STALKER", didn't bother to try steps 2, 3, and 4, and just bought it off Steam instead?  Impulse feels like Wal-Mart, you're not really 100% sure about how everything should be done, so you just throw everything you can out there, make it as cheap as possible, and hope people can navigate the labyrinth to find what they're looking for.