Muck Rack aggregates tweets by professional journalists from most of the major news outlets and allows users to sort journalists’ 140-character dispatches into broadly defined beats. The site also allows users to post announcements which are added to Muck Rack's press release page and sent out by the @MuckRack Twitter account. The most recent press releases are featured on Muck Rack's sidebar and featured on Listorious.com, a leading directory of Twitter users with people search.
You can also tweet a short press release that will be displayed on the Muck Rack Twitter feed and website.
The content is free to read. For individuals, the monthly fee is $99 for an intro account and $199 for the standard account. For teams, the monthly fee is $899 per month for small teams (up to five users), $1,798 for medium sized teams (10 users), and $4,495 for large teams (25 users).