Good, but not great Rated 3 out of 5 stars

I really like this addon and I want to use it, but there are too many bugs. When using the vertical tabs method, having too many indents or tabs slows Firefox to a crawl, even on my high-performance machine. When using the tab-tree-on-top method, occasionally the entire tab bar will shorten to about 100px, and the only way to fix it would be to restart Firefox. I'll keep tabs on this addon because I really hope these bugs can be fixed.

This review is for a previous version of the add-on (0.11.2011020402).