When I started Geekazine, I decided to turn on the registration to comment. After carefull concideration, I have decided to turn that off. The Akismet will still be turned on, so spam comments will still be caught. However all you will need is a name and valid email to comment.
Also, if you want to get the Weekly Podcast Show Notes in your email, or if you want to apply to be an admin to post content, you will need to register. Thanks!