Trophies because on a quick look you see how many games a person has platinum'ed off the bat without digging much. Achievements are nice and the original idea but requires a little digging to see if someone truly completed a game or how much of it due to the 1100/1000 type of achievements out there.
Make games, not war (that goes for ridiculous fanboys)
I may be the next Maelstorm or not, you be the judge http://videogamesgrow.blogspot.com/ hopefully I can be more of an asset than a fanboy to VGC hehe.