There are two Web sites that make it incredibly easy to find journalists on Twitter: Media on Twitter and Muck Rack.

Both sites offer an easy and quick way to find journalists on Twitter, who you may be interested in following. While Media on Twitter lists more journalists on its site, Muck Rack is particularly useful during breaking news and times you’re interested in real-time information.

Media on Twitter

This site is the more comprehensive of the two, with 1,064 journalist accounts (and counting) in the U.S. alone. Originally founded by @PRsarahevans, who also founded the weekly and ever-popular JournChat, Media on Twitter is simply a database of journalists on Twitter.

This database is continually updated. In fact, you can contribute to it yourself by filling out the form at the top of the site. You can sort by name, Twitter ID, media outlet, position, whatever you choose. You can also view contacts by country.

Muck Rack

This site is a bit more lively, as it actually displays tweets and TwitPics posted by journalists in real-time. It is particularly useful to follow this site during breaking news, as not only does it post what journalists are saying, but it has its very own “trending topics” and you can navigate by beat or news organization.

Muck Rack works directly with Twitter as an application. So by hovering over any tweet, you can reply, retweet, or follow the user, as well as classify their tweet as either newsworthy, witty or insidery with a single click. Muck Rack also has spin-off, sister sites that allow you to follow what designers, developers, celebrities, musicians, sports figures, and venture capitalists are saying on Twitter.