I don't think relevancy is an issue unless it is a big, authority site.
Backlink speaking, that is. Forums are split into so many different
rooms, regardless of main niche.

But the targeted traffic you can funnel is golden. One of the best
ways to funnel traffic to an adsense site.

I just thought of something. Since the WF is really about IM and SEO,
wonder if a sig link regarding IM or SEO gets more juice than say, a
link to a wii review...If not, then that's what I meant by relevence
above. Or non-relevance.

I believe relevance is more associated with contextual links.

Paul