BlogRush.com - Your Blog Syndication Network

BlogRush is a free service that was created to help bloggers solve their number one need: More readers for their blog. By adding the BlogRush Widget to a blog, a blogger can get instant distribution for their latest blog post titles across a network of related blogs. BlogRush users earn "syndication credits" (the right to have their blog post titles shown inside a widget on another related blog) based on their own traffic (loads of the widget) as well as the traffic of other users they refer to BlogRush. Users can automatically refer others to BlogRush via special links on the widget, as well as through the promotion of a special referral URL they are given.

"BlogRush is a "Cooperative Syndication Network" that rewards its users for their contributions to the network -- from the impressions they provide of the BlogRush Widget to the referral of other users through 10 'generations' of activity and the impressions of the widget that they provide. BlogRush was designed to be incredibly viral and to provide its users with tremendous distribution leverage to receive exposure for their blog content (onto related content blogs) that they could never achieve on their own; at least without a massive advertising budget."

It is free and when a person clicks on the widget, then signs up for a free widget themselves, the referrer is credited for the new person's clicks. This is a viral traffic tool. It is a type of multi-level marketing, but with no money changing hands... strictly free traffic for internet marketers.

If BlogRush is free how does it make money? What's their business model?