KLive is a tool allowing the kernel developers to learn the amount of
testing that given kernel version has received. Why is it worthy of using?
Well, that is how Linus Torvalds announced the 2.6.15-rc5 kernel:
There's a rc5 out there now, largely because I'm going to be out of email contact for the next week, and while I wish people were religiously testing all the nightly snapshots, the fact is, you guys don't.The developers are not clairvoyants and they do not know how many people have tested given version of the kernel and for how long. Thus, if everything works well and no one reports any problems, the maintainer of given kernel tree has no idea if the latest version of it have been tested at all. That is where KLive might help, as it makes your test system report the kernel version, uptime and some additional information to a server which collects this information and produces some statistics based on it (they are available from the project's web page at http://klive.cpushare.com/).
If you want to start to use KLive, go to http://klive.cpushare.com/, where you can find out how it works and how to install it. The installation, by the way, is very simple, as you only need to install some packages needed by KLive, that should be available in any contemporary Linux distribution, and run
# sh klive.sh --install