Get a Gravatar
I've been using Gravatars here on akamike for a while, but never really spoken about them. To raise awareness I've put together a "What are Gravatars?" info page which is linked on every comment form. Hopefully more friendly faces will appear in the comments!
Why not take things a step further and add Gravatars to your own site/blog? They aren't restricted to Wordpress and I know that I feel more compelled to read comments using them, so set them up!
I look forward to seeing more smiling faces :)