If I go to:

Code:
User CP > Edit Yout Details
There is a section called Other Distros

Which says:
If you do not use Ubuntu you may select another distribution below. We've only included the top contenders on this list (sorry we won't add more).
However, the list has many non-linux OS's, including BSD's, MAC OS and probably other.

The title/text should be:
Other Operating Systems

If you do not use Ubuntu you may select another distribution or operating system below. We've only included the top contenders on this list (sorry we won't add more).