The questions all upcoming webmasters and SEO’s ask themselves: Should I ask for links or not? Can I get targeted paid ads/reviews? Are relevant reciprocal links worth the effort?
The short answer is: anything you do to your website that benefits your users will also help you in the search engines. If this means getting links to your electronics site from manufacturers, get these links. If it means getting reviews on blawgs for your law firm site do it. It may mean sending out articles and press releases for your fashion news site.
Different websites have different search engine optimization requirements and need to be promoted uniquely. It is probably not a good idea to try to get lots of .gov and .edu links for your home improvement website.
Matt Cutts acknowledged that Webmasters are free to do whatever they please with their Web sites and Google is free to do whatever it wishes with its index. Read more from Esoteric.