Originally Posted by awesomenyn
You should try to get your website into the good ‘neighbourhoods’ of your industry. Try and get links from the neighbourhoods at the top of Google for your key phrases after all Google likes these sites enough to rank them! Find that circle of sites where all the big boys in your industry link to and are linked from and get involved. Don’t worry too much about “theme” of websites linking to you though – as this is well, a bit, unproven. Good for traffic though!
You may be right; that relevance of a link is not proven
as a ranking factor, but I would wager money it has weight. In any case, if it isn't a factor now, we can be sure it will be. See: Google's Reasonable Surfer: How the Value of a Link May Differ Based upon Link and Document Features and User Data
And whether it's a ranking factor or not, it's a usability factor of the highest order, and that means it highly impacts the quality and quantity of *traffic*
and conversions you will get from a link.