Figuring out the comment thing

Tough thing about blogging is whether or not to allow comments. You don't want unfriendly comments, and you don't want "spam" comments (comments generated by computer, usually for SEO purposes). On typepad you can require comments to get your approval first. Blogger doesn't do that, but at least it has a word verification box (hard for computers to do) and it does notify you when you get comments.