The latest Firefox 4 beta comes with an easy hack to help tab addicts cover the high cost of memory-devouring tabs. Watch how to enable this key function of the BarTab add-on, without installing the add-on itself.

So you keep open tabs like libraries keep books... Aren't you afraid Firefox will consume all your memory? Don't you fear browser restarts because it takes so long to reload all your tabs?

Well, you shouldn't! Because now you can put all the tabs you don't need on your bar tab, and only pay for the load when you actually want to visit them.

BarTab can intercept when tabs are loaded in the background or restored after a browser restart and will only load the content when the tab is actually visited. It also allows you to free memory by unloading already loaded tabs, either manually or automatically.

PicLens instantly transforms your browser into a full-screen slideshow experience. With just one click, PicLens makes photos come to life via a cinematic presentation that goes beyond the confines of the traditional browser window. With PicLens, browsing

TiddlySnip is a Firefox extension that lets you use your TiddlyWiki as a scrapbook! Simply select text, right click and choose 'TiddlySnip selection'. Next time you open your TiddlyWiki file, your snippets will be there, already tagged and organised.