These days' people do link sharing to improve the pr and link popularity. In this manner any internet search engine likely to one site may also get references concerning the other linked site. In this manner a site associated with another site having good ranking may also gradually get a rise in its ranking as increasing numbers of people visit that site and select it.
But more important things is that great care ought to be taken while putting a web link. A user must use good anchor-text key term. By good text key term After all a keyword that is more regularly searched on se's. Please note that certain key word that's very important to one internet search engine might not be very important to other se's also as the criteria of 1 search engine differs from other se's.
The anchor text that you utilize, should reflect the keywords which you are looking to get an increased listing for. It will also accurately describe what information will undoubtedly be on the next page in the event that you go through the link.