WordPresss MetaTag Plugins
I am continually surprised with the quantity of bloggers (and increasingly websites as a content management system) using WordPress. One of the only problems for the platform as I see it is that it doesn't help users create important meta-data automatically. Of course, the beauty of open source and WordPress are the additions offered by the community via plugins. I stumbled across an interesting page on the WordPress codex that lists no fewer than 20 solutions for working with meta-data on your blog. It's a project you should definitely look into!