Wikipedia is probably the best. It has ALL the information in the world man voluntarily adds to (wow)...a VERY LARGE scope of topics... nearly anything human knows. Walau... the infinite world of knowledge here... An automatic five out of five and recommendation!
Brickfields - Quickly evolving into a good article...
Innostream - Deleted. I also find no reason to keep it any longer since they already have no website and that I've had the Insert SIM issue with it a few times.
Mr. Midnight - I made it while I was still an anon editor.
Mr. Mystery - Didn't survive the first time I created it due to insufficient evidence.