Earlier quoted context omitted.
What's wrong with a github account? Give them some love. Their private option is cheap. Over all once you start using github it's hard to go any other route anyway.
What's wrong with a github account? It doesn't support Mercurial. I use BitBucket, on which private repositories are free (and I don't have to use git, which is a plus). Supporting only github means I can't use it. Unfortunate, because their stuff looks cool.
I'm sure if you really wanted to use Pagoda, you could use the http://hg-git.github.com/. Or you could just sign up for a free Github account (free seems to be a requirement for you, and these days with the state of the economy I can definitely relate. although no free and private as you mentioned) and learn git, which is a joy to use, and blazingly fast, which is nice for cloning large repos. Personally, I use Heroku and prefer Ruby to PHP so I don't feel compelled to try Pagoda, but I could appreciate the work that went into the site, and the backend. Impressive.