PR-5 sitwide links on a message forum.

I am considering purchase of an established message forum that deals with freelance design / html jobs / web work.

This is not a casino site – I am testing the waters to see if people would still be interested in purchasing sitewide links on something like this or if the fact that it is off-topic, discourages people too much … thoughts?

800+ pages indexed in google
PR-5
active website

Thanks for input – Bernie
PS, links would probably be in the $100 per month neighborhood.