Gitorious needs a "documentation" link on its front page leading to at least "overview" and "getting started" docs.

Also, as an aside, Gitorious should consider switching to a new logo, or none at all, and then choose a lighter colorscheme for the site. The current theme reminds me of a hospital room at night.

Seriously; if you ask around and find that people really can't seem to come up with a good reason why they use Github instead of Gitorious, this is why.