The importance of cloning your repo

The importance of cloning your repo, on your own servers, and not only on gitorious.org (for free software) or github.com (for commercial software).

Clones on workstations don't count, since usually they're not publically or team-wide accessible.

You need to set up and use your own servers. Just do not rely on the cloud!

I have my repositories cloned on each of the three computers I use for development. Is that not the conventional practice?