iterasiIterasi, a social bookmarking company that lets you archive web pages, is launching its first paid product today, targeting public relations and marketing firms that want to keep track of news coverage for their clients.

Called Positive Press, the product lets you track news sources the way you would with a traditional RSS feed. However, the problem with conventional RSS is that Web sites change constantly, so it’s hard to monitor how a story was placed or how it changed. With Iterasi, you can store copies of Web sites at a certain point in time and get auto-generated reports that track coverage, explained CEO Pete Grillo. If you subscribe to CNN, for example, Positive Press can archive the site once every half-hour or so while searching for terms or brand names that are of interest to you.

“This can be a place under the mattress to deliver information that may have gone off the web,” he said. “We want to provide industrial-strength archiving solutions.”

Positive Press starts at $99 per month for one to two clients and 25 feeds. The price will rise depending how much you want to archive and how many sources you want to track. There is also an unlimited “platinum” solution for $699 per month.

The Portland, Oregon-based company has seven employees.