Mike Rose at Gamasutra: "I'd be the first to admit that Xbox achievements and PS3 trophies are a huge deal in my everyday gaming, and have affected by play style considerably. For example, I used to play games on either Easy or Normal difficulty, since I had no reason to test myself with Hard mode. Now the majority of games offer extra achievement points for completing the game on the toughest difficulty, and I'm more than willing to go that extra mile for another 100G.
Yet while I'm madly in love with both Xbox achievement points and PSN trophies, there is one type of achievement that doesn't interest me at all - Steam achievements. Awarded during certain PC games available via Steam, they mean absolutely nothing to me, and are really quite pointless."