Every time you link to another one of your posts using a specific text it helps to tell Google that that other post is about that specific thing. In turn, this helps that other page to rank for that term. And the more pages that you have linking to a specific page using that text the more it tells Google that that page really deserves to rank for that keyword.
When was the last time you went to a new restaurant without looking it up online beforehand? Or bought a product that didn’t have at least a few 5-star reviews? It seems like more and more our world is run on reviews. And you can make money online by writing them. Get started by creating accounts on sites like Vindale research, Software Judge, FameBit, CrowdTap, Influence Central, and Modern Mom. However, before you run off and start writing, be sure to check the small print on each of these sites. Writing reviews isn’t a huge source of guaranteed income and you want to make sure that it’s worth your time before you get going.