Ask Google, search engines love links. Of course, they love some links more than others. For example, a simple lin
k exchange (reciprocal link) doesn't have as much value to search engines and so, it doesn't receive the same weight as a non-reciprocal (one-way) link – the theory being that a one-way, in-bound link is a recommendation from a site owner to visit this linked site. The link, itself, is testament to the quality of the site being referred.