I used to go to the visiphone wiki a lot for info about the game. But recently I've been going to the official pso2 japanese wiki (pso2m.swiki.jp) and have google translate it for me.
It's kinda broken but the information, drops, etc is more detailed and reliable than rumors of players and wrongly translated things.
If someone didn't know about the official wiki, I hope it helped.
For example, it was specially helpful for me when I was planning my unit affixes and in the special ability list on the swiki, there's a *weapons only text