It seems that some people haven't been able to leave comments on my blog, and I was just thinking it was Blogger acting up. However, I just found out it might have been me that was cutting people off. I had commenting set to "registered users." That just got changed to "anyone." If you end up putting in your own name and URL, your comment comes to me as a no-reply thingy and I can't e-mail back, but at least you can leave a comment. Hopefully this helps.
Thanks go out to Libbie for letting me know how to fix this.