Rated 4 out of 5 stars

I don't get what this add on really does, I think I do. I have a slow computer (it has 1 gig of ram and 2.0Ghz, saving for college before I get a new one) and Firefox gets pretty slow cause I have like fifteen active addons (now sixteen), so I just want to know if it really just makes Firefox a bit faster or something else? I think it's a great addon from what others have said anyway.

This review is for a previous version of the add-on (0.8.1-signed.1-signed). 

Hi Shaibu,
This add-on just makes it easy to access the options available in about:memory and make things automated. Those memory operations clean up the allotted memory which remain even after closing the page/tab. Effect of these operations are more visible when you have more number of tabs with huge sized pages.

Hope this helps.