A big problem I have is I want to post a single question to a forum and be on my way. I hate having to sign up. Same deal but worse with mailing lists. What if your app had login accounts to the top say 10,000 forums so people could pop in and post questions some how?
Some forum software accepts openID now. I agree completely, at this point I have so many forum accounts on random sites where I just needed to ask one question pertaining to some program or something. The other day I needed to ask a question on some forum and was about to make a new account when I found that I already had made an account. Now I've decided to only use openID for new forums if possible and just not join others unless I think I'll participate a lot.
