Nice when works, bad when it doesn't Rated 3 out of 5 stars
This add-on works nicely when it works, but then sometimes it doesn't work (e.g. when the web site you visit has Flash or other animations). Even when it works it is not a huge convenience so taken together I would rather not have the trouble than have it.
Oh yeah another downer (at least for TB 6). When you disable it and you have a URL in your mail that you want to visit, nothing happens. Get Zero when you click on it. I'm not sure whether that's Thunderbrowse's fault but when I did not have it I never got this behavior.