@Christoph
I've tried it.. even when maintaining an independent hg tree for stuff in the trunk of a large svn repo. It just doesn't work for me.
I'll enjoy the 30+ commits (vs over 1000 actual commits) that Ohloh tracks.. and keep my fingers crossed. I know they have to keep the business end going.. but so many hg users = so many new users .. ah well.
It will happen when and if it happens (despite assurances it seems to be a big if).. I'm not going to set up and keep up two repos per project just so I can be tracked by Ohloh :)
Ohloh is for profit, I make $0 from what I produce.. I see no reason to spend more time to 'just be tracked' .. rather its easier to point out that Ohloh just doesn't track even 5% of what I do :)