Long on the WP scene has been Jerome’s keywords, a post tagging plugin. While a lot of users have adopted Ultimate Tag Warrior (myself included), this plugin continues in development, and is now at 2.0, in a beta release. I may install on a test blog to see the differences, and see where development stands. Perhaps that would make for a good post, to compare to the two plugins. The real question would be if Keywords would be able to “import” the tags from UTW, and vice versa. I know UTW has a convert option, but you need to know the custom field in order to do so. If anyone has experience with both, I’d love to hear some feed back in the comments, (not to mention, save me from duplicating the info).
Tag import from other systems is at the top of the feature list. I may include a UTW importer with the final 2.0 release in three weeks or so.