Out of Debian packages which self-identify as using a version control system, git is the most popular distributed source control system. Caveats apply of course, but this is interesting in that that preference is somewhat organic in nature, as Debian offers its package maintainers a choice as to which vcs to use.
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I wonder if we see a similar sort of preference in our fedorahosted.org services split. Fedorahosted offers git,bzr,hg and svn as service offerings and projects choose which service they want to use. On a project count basis at fedorahosted is git showing up as strongly as an overall preference to other dcvs as Debian's packaging tags are showing there?