On a serious note, I would guess that having your commit history and cross referencing it with the issues db (seeing things you closed or breaks caused by your code) might be quite interesting to a recruiter and a source of some pretty targeted (read: expensive) advertising.

[edit: not to mention company lawyers looking to sue some NDA violating employees]

I can think of a few ways.

Perhaps you could grep for common libraries like "ffmpeg" and make a guess as to what sort of software it is. Maybe a video editor/player in the case of ffmpeg. Once you figure that out, you could show advertisements for the same sort of software.