I think traffic from forums is a good approach, at least initially. I tend to concentrate on just a few forums though, rather than scattering my efforts to the 4 corners of the web.
That way, through your post count and because your name keeps showing up in the threads, people in that forum start to perceive you as an expert, and they're more likely to click on your signature, check out what you have to offer, and take you seriously.
