As well as being able to claim your twitter profile, and classify yourself in up to 10 categories (although I’m in 14 for some reason), you can also add your social media links to your profiles on Pownce, LinkedIn, Flickr, FriendFeed, etcetera – and now add more details about yourself in a mini-profile or biography.
The search facility in Twellow can also reach into your brief summary to pick up keywords and links used there, and your biography information can also include basic HTML, so links and visual formatting can be added. The summary is indexed in search – the biography does not appear to be indexed yet.
Apart from being a great way to find people using Twitter with similar interests, and pinpointing interesting people to follow, categorized Twellow profiles are also becoming visible in Google and Yahoo searches. So I’d recommend making sure you claim your profile at Twellow and add your details and social links to ensure your online visibility and credibility stay high.