Not that I think it's a bad thing, a lot easier to do than to leave a comment each time and comments sometimes meant nothing.
However, I don't understand why you'd just trash the comments system entirely.

While TF2OP is NOT a 100% reliable source of reputation, indeed, it at least helps with quick spot checks instead of having to wait for other sites to load (SteamRep takes forever to load for me, I have no idea why.) With that said, it's also a little easier just to see a simple spot check and see that a user has 100 rep on the TF2OP from different people saying "Hey, I traded this guy, it's all cool" rather than searching around on SourceOP for a thread that no one said anything on.

With all that said, I'm just curious as to why you scrapped the system. Too much load on the server? It didn't really matter anyways? What?