If you recently commented on an entry in this blog and the entry still appears to reflect "0 comments", please be assured that that doesn't mean I removed your comment. Blogger appears to have a bug which causes the number of comments on a post to be rendered incorrectly--but only if you're looking at the blog page as a whole. I've found that all the comments show if you're just looking at an individual post. See also this link.
EDIT: 7/7/2010 9:50 a.m. EDT--The problem may have been fixed. The post where I noticed it now shows the correct number of comments.