this might be old stuff, however, i thought i'd pass along a technique i came up with that has been working well for me(reinventing the wheel?) in my efforts to get sites to link to mine. i go to the google 'advanced search' and put my identifying/keyword in search box and in the "exact phrase" box i type the phrase "add a link." this selects for sites in my category that are amenable to linking externally. if nothing else, it's free, so it can't hurt to give it a shot, i suppose.