The pure freedom of customizing the liven hell out of
it. You can't really tweak with some other OS systems
that you pay some cash for. Ubuntu is easy to use and
easy to grasp. Granted Linspire is for the very new to
lunix and you have to hack into it to able to DL packs
that is not on Linspire warehouse list.
There is lots of shit you can do with Lunix and shit
you can't do that windows does. If you are ready to
install and ready to rock. Please read the guide at
http://ubuntuguide.org/. Grated that Ubie 5.10 is now
out and you can upgrade to the new one with little
hassle.
If you want extra stuff, you can DL Easy Ubuntu. easy
Ubuntu is really slick program.
Please with the live CD, if you want dual boot your
HD.