For whatever reason, ImageShack has decided to stop developing the Imageshack right-click Firefox add-on since its last update on 26th December 2006. The latest official version is not compatible with Firefox 3 and Firefox 3.5 beta. It’s such a convenient add-on that there’s no reason to abandon it.
Although ImageShack supports image transloading (direct upload from [...]

My Gmail Notifier Firefox add-on had stop working for several months already, and apparently the Offline Gmail feature from Gmail Labs is the culprit.
Updating to the latest version of Gmail Notifier (0.6.3.11 at the time of writing) didn’t help at all, but fortunately this can be fixed by simply installing this: hosted2.xpi
It works for me, [...]

(Firefox Add-on): Just like torrent files, YouTube videos can get pretty nasty too. Judging from the quality of comments left by the YouTube community, you shouldn’t be surprised to spot some nothing-better-to-do YouTubers uploading fake videos with misleading titles (say, a video full of emoticons titled Pink Panther 2 Trailer: watch).

With TabCloser, you can close all tabs of a specific domain in just 2 clicks. After installing the Firefox add-on, there will be a ““Close all example.com tabs” option when you right-click on a tab.