Thanks to this thread, I have stopped moderating comments on my Fishing4Deals blog. When I set up Fishing4Deals, I was holding comments for moderation, but now that the blog has picked up steam, I can see how that can discourage commenters. People want to see their comments posted right away so they can get immediate feedback from other readers. The WordPress spam filter is excellent and has always been right! The only discouraging thing is that I have ten times more spam than real comments.