I understand all hard drives that are 2.5" should be compatible with PS3 but I am looking into this one and one comment has caught my eye.
A person stated that this hard drive is not compatible with PS3 because it features "Advanced Format Drive" and the PS3 "Fat" does not support it. (Only Slims). Should I be concerned about this?
I'm not sure what the differences are, but I have a WD 500 GB Scorpio Blue in my 40GB PS3 and it works just fine. You should probably just browse the reviews in case others specify slim/fat, but I would assume from that review and the comment that it won't work except in slims.
I found your hard drive, is it this one?
Probably; I'd have to check, but most likely. Other reviews for your first posted link say it works with fat PS3s, FYI.