It was of great use,when i used a 256 MB RAM.When other well-known browsers were very slow to open even two pages,K-Meleon could easily open 5 TABS simultaneously.It is a open-source software available in English,German,polish,Spanish,French and Russian.
This add-on is compatible with the latest version of Firefox 3.5.Whenever you need to create a short url of a page,just click on the Puny URL icon in the toolbar of your firefox browser