There is a site that just agreed to do a link exchange with me, being that some of the content on their site ties into mine, but the overall theme of the site does not have anything in common with mine. I would be the 17th link on this PR6 links page (the rest of the site is a PR7), and the site gets a ton of traffic. I know it's best to do link exchanges with similar sites, but for a site like this, even though it's unrelated, is it worth it to do the exchange?
Any backlink is a good backlink, in my opinion. If you feel that you are getting a good deal then it will help. It would have helped even more if the information was related, but it's tough to beat a pr6 link that includes traffic.
Not worth it IMO. Don't think PR. What value will this other site provide your website users should be the question???
The value is that the other site has a few obesity related blogs that apply to what my members are looking for. It's not dedicated to obesity, but has some content, however obesity is not their focus nor will the search engines make that correlation IMO.