But search engines do not take every vote to consideration. They go a step further by examining whether the two sites that are linked through the text link are related in theme and content, and in turn whether the user qualifies to cast a vote for such a text link. Thus the search engine can come to a conclusion about the relevance of a users vote. More the relevance of a vote, more is the weight given to that text link.
There has been a wrong belief among the Webmaster forums lately that a domain will be banned if another site purchases a sponsored text link from that domain. This is no doubt, a misconception, since a website owner can never be held accountable for the sale of inbound text links. Due to high rates of link exchange and attempts to attain artificial link popularity through text links, search engines give a good deal of importance to the relevance factor.
high pr backlinks