For those who do not know it, take a look at WikiPatents, Community Patent Review:

“The WikiPatents Community contributes to the US patent system by reviewing issued patents and pending patent applications. WikiPatents features a wiki-like interface to review, rate, and discuss patents — plus free patent PDF downloads, file histories, and advanced patent searching.“

They have about 4 million patents in their patent base.

See Anticipate This! for a short review.