I've decided I'd rather not keep a history of my comments/posts, at least not publicly. Given the current options on Saidit (and Reddit) my only option is to delete my past comments/posts. OK, fine if that's what it takes. But unfortunately for me, I lose any future reference I might like to have. And unfortunately for Saidit, my comment/post will disappear, losing any potential reference value.
Personally, I just see no benefit to people creeping my old content. But I don't care if someone comes across it in a thread naturally. I know Reddit will never allow such a thing as it's of critical importance there to be able to judge my past. But Saidit should have no problem with this I think, and it could be a nice way to differentiate itself from other sites.