Hi!
I just started playing around with Tagaroo on my blog and it's definitely a cool plugin. The one problem I am having with it is that it doesn't suggest as many tags as it could. This should be fine, I have other plugins that will suggest tags (from Yahoo or whatever). However, when I have Tagaroo activated, these other plugins (I've tried Simple Tags and Tag Suggest Thing) lose their 'click to add a tag' functionality. Disabling Tagaroo,  allows the other plugins to work.
I'd love it if Tagaroo could either play nice with the other tagging plugins or add in a tag suggest feature that does the same thing (calling the yahoo API or some other external tag suggest feature.
In particular, if Simple Tags and Tagaroo could play together well I'd be more or less in tag heaven.