If you surf the web at all, you have heard of Digg. It was one of the first social bookmarking sites that became very popular. A home page story on Digg has the potential to send you ten of thousands of visitors. So its natural that similar sites dedicated to other niches have sprung up.

Over the last four years, the real estate industry has steadily embraced the internet. Most agents now have a website and in the last 2 years, an even larger percentage now have blogs and blog on a regular basis...which is where Puurple.com comes in. Puurple is a real estate social bookmarking service similar to Digg, but concentrating on the mortgage and real estate industry. The schematics are the same. Users are allowed to share stories that they find interesting with others and those stories are voted on by other members.