The revisions let you track differences between multiple versions of a post.

user warning: Duplicate entry '50156387' for key 'PRIMARY' query: INSERT INTO teamipxaccesslog (title, path, url, hostname, uid, sid, timer, timestamp) values('Revisions for BF:BC2 on steam sale', 'node/2062/revisions', '', '10.10.0.1', 0, 'e2a1nd7b99r4acj9ei5qggbt21', 205, 1781960672) in E:\Apache\htdocs\modules\statistics\statistics.module on line 63.

Revisions for What games are you getting?