wheel - 8:11 pm on Nov 3, 2011 (gmt 0)
THere's lots of closely related topics that I would consider linking to. But you're suggesting I start publishing content on those topics - and that I"m not prepared to do. I've got lots of information about my very narrow niche, branching out simply to link out to someone is a whole other story. Plus, adding that content is unlikely to be of interest to my visitors other than in passing. They're coming very specifically to read my content, related content just isn't that related.
If I was a plumber, I'd be prepared to link out to electricians on a links page. But starting to publish content on electricians isn't something I'm likely to do. that doesn't benefit me as being a plumbing authority.
Sounds like a links page isn't that big of a deal. And the outbound link strategy is fine if you're not the authority in the field.