Update: We've added a politics category. See below.

As Twitter celebrates its fifth birthday today, TBD seeks your help in identifying and recognizing the best journo tweeps in town.

Who are the Washington journalists you follow on Twitter? Why? Who are the best at interacting with the public, at reporting the news through Twitter? Over the coming days or weeks (or until you and we get tired of it), we'll watch, analyze and report who are the best #dcjournotweeps in several different categories.

Think broadly: Yes, the Post (WaPo, as it's known on Twitter), but also smaller newspapers, TV stations, radio reporters, ethnic media, niche media, websites, bloggers, newsletters. Whatever their primary platform, tell us about the local journalists who excel on Twitter.

We're primarily interested here in individual journalists' accounts, not the institutional accounts, such as @TBD, @washingtonpost or @wcp. But the Twitter account doesn't have to be in the journalist's own name. For instance, @drgridlock is primarily the work of Post columnist/blogger Robert Thomson, so we regard that as a journalist's account, not an institutional one.

Self-nominations are welcome (we won't tell). You can nominate by email, tweeting with the #dcjournotweeps hashtag or by commenting here. Or blog your votes and send us the link. We'll report back every now and then with our results. Sometimes we'll look over your nominations (and add our own) and make a determination of a winner/loser ourselves. But if it looks close in some categories, we'll give you a chance to vote.

Given our local emphasis, we didn't include politics in the original list of categories. But after retweeted requests on Twitter, we are happy to add it. Gene Weingarten also suggested a category for funny journalists (he'd be hard to beat for that one). What do you think? Does Washington have enough funny journos on Twitter to add a humor category?

Here are the categories (and feel free to suggest a category we've missed):

Politics. This town is crawling with political reporters, covering both national and local politics. Who's the best to follow on Twitter?

Local news. TBD is all about local news, so that's where we start. Who are the reporters covering local news in and around Washington whose tweets let you know what's going on, ask you what's going on, etc.?

Sports. Which sports writers/columnists/bloggers/anchors are the most adept on Twitter? Who breaks the news you need to know about the Redskins, Hoyas, Nats, Caps, Terps, Wizards, DC United, high school sports, whatever sports or teams get you excited?

Entertainment. Is there someone you follow for news and tweet-length reviews and insights about the local entertainment scene?

Non-journo news source. Tell us about an official agency or PR person you regard as an important news source, someone who's not from a traditional news organization or independent blog or site.

Wait a second: We're journalists here. Aren't we supposed to be negative? Help us call out the journalists who still don't get Twitter:

AWOL. Who's the biggest-name Washington journo with no Twitter presence at all?

Twitter quitter. Who's a Washington journalist who opened an account, posted a few lame tweets (no more than one screen) and bailed, leaving the account online for us to laugh at?