If you’re active on Twitter, you’ve probably seen at least one reference on your own profile page to Twitter lists.

They’re a powerful way to categorize Twitter users according to their area of expertise, or the topics of their tweets and then, once the list is created, let anyone see it. They save valuable time because when you create a list, every tweet from every person on that list feeds into that particular list. You don’t have to drink from a firehose on Twitter to be able to find the tweets from people who have a particular expertise.

But don’t be fooled into thinking that that’s the only way to use Twitter lists. They’re powerful tools that can help you do valuable research, track down experts in a particular niche, find people in your target market, spy on your competitors, find journalists who cover your industry, and so much more.

They’re also an excellent way to determine how other people perceive your expertise and your brand. Here’s what I mean.

Go to your Twitter Home or Profile page and look under your photo on the upper right side. You’ll see the number of people you’re following, the number of people who are following you, and the number of lists you’re on. Click on “Listed.”

Instantly, you can look down the list and see which Twitter users have put you on one of their lists, and you can see the names of their lists. For example, I’m on a number of Twitter lists. When I click on “Listed,” a window opens and I can see that many of the lists include the words “virtual assistant”, “VAs” and “social media.”

If you aren’t on many lists, or you haven’t created your own lists yet, that’s OK. Joan Stewart, aka, The Publicity Hound is hosting a webinar  at 3 p.m. Eastern Time on Thursday, Aug. 26, called “How to Use Twitter Lists & Directories to Generate Publicity and Build Your Brand.” If the time is inconvenient for you, sign up anyway because she is recording it. You’ll get a link where you can watch the streaming video, or download the video.