Another entry in the "RAM saver" category, this is one which was mentioned by someone on the #lfs-support IRC channel earlier today.

Although I haven't actually tried it out myself yet, the verdict on #lfs-support was that it's very good, and apparently also very fast and resource-efficient. If you're needing to put together a FOSS desktop environment for an older machine, or just like resource-efficient desktops yourself, you might want to give it a look.

For any of you who don't already know about these, I recently came across this article outlining a number of useful config modifications for Firefox. The main one I was interested in was the "minimise hack," which can radically reduce Firefox's memory consumption while it is minimised. Might be good for people without a huge amount of RAM.