Topix has citizens uploading 4 millions of comments per month in forums in some 5,000 towns in the United States, generating 8 million monthly unique visitors and gettting $4 CPM’s, according to CEO Tolles in this interview with Beet.TV

The Palo Alto-based company has raised $15 million in funding from Gannett, Tribune and McClatchy.

We spoke with Tolles earlier this month at the paidContent2011 conference in Manhattan where he was a panelist.

Andy Plesser