Facebook Like for Tags, which packs a lot more punch into the Like button, is becoming increasingly popular for social syndication.
This plugin allows you to connect with Facebook for ongoing updates arund what users have liked before. You define the context with tags or categories. It is simple!
Pick it up at
http://www.ingboo.com/pvm/plugin
http://wordpress.org/extend/plugins/like-for-tags/
Read more about IngBoo at http://www.ingboo.com/press
Facebook Like for Tags is a free plugin, released under GPL.