Here are two very quick tips for improving your blog:
1. Do not require comments to be approved before they go live. By insisting on comment approval, you take away instant gratification from your readers. People love to see their blog posts go live right away! By allowing comments to go live instantly, you have to frequently monitor your comments. But you should be doing that anyway, so you can interact with your readers. Tip: Use captcha or another comment verification tool, so that you won’t have to wade through spam comments.
2. Do not require readers to register before they comment on your site. Adding that extra step will cut off many who would comment otherwise. Remember that your blog is about your readers and not you.