Linking With A Millstone

I've been engaging in reciprocal linking with other websites for some time. I've always been aware that a single incoming link from a high PR website is worth far more than many links from low PR websites (the actual ratio is known only to God). I've also always been aware, at least over the last couple of years, that incoming links from non-relevant websites is not only valueless but can, in fact, have a negative effect on your Search Engine ranking (*as opposed to PR). I've written previous articles about linking, one or two of which have been specifically about the practice of requesting and accepting links from anybody and everybody. However, I've never been armed with any 'hard evidence' with which to support my plea for some sensible thought about the way in which some people handle their linking practices. This time around, I have this little offering from Google, the people who are responsible for the whole 'PR' caboodle. "How is PR effected if you have text links on a page that is irrelevant to the website? Links from a non-related site will still pass PR, but will have little or no effect on the SERPs. Too many of these might even have a negative effect on SERPs. Remember, PR matters when all other things are equal, but that is never the case. You are much better off getting back links from a relevant PR4 page (and site) with targeted anchor text than getting back links from an irrelevant PR6." - Ref: http://www.prlookup.com/faq.htm There you go. You may not have heard it here first, but it is out of 'the horse mouth', so to speak. I don't know how long this particular piece of information has been available at Google for all to see (I don