My biggest problem (I haven't tried anything more complicated like bookmarking or uploading pics) is that when I read a thread, sometimes when I click out of it, the title is pale, indicating I've already read it, and sometimes not. So every time I come to the board, I can't tell if I've read something before or not. It's taking a lot of the fun out of it when I click and then see it's something I've already read. And when I get to older posts, they are all pale, so I can't tell if I've looked at them before or not, either.
All in all, it's more work for me, and I'm spending less time here...