I installed Compiz on my laptop running Ubuntu 11.10 last week. The way I installed it was kind of different, I opened up a terminal and typed this command:
sudo apt-cache search compiz
After that, I installed all the packages that appeared in the terminal window. I enjoyed all the effects of Compiz like Paint fire on screen, Desktop Cube, but I can't help but noticing people having some extra plugins which I don't have, such as Atlantis, Snow, Tile and much more.
Where are they getting all those plugins and how do I get them?