Until very recently, I hadn't heard of Twellow. But being curious, I decided to find more about it. Surprisingly, it is a directory solely geared around Twitter. In otherwords, although Twellow is a service provided by a separate company it greatly enhances the use of Twitter.
Twellow basically categorises people using Twitter under their respective professions. For instance, if you are interested in networking with people in the blogging category, then you just double click on that category and a list of the people is revealed.
In my opinion, Twellow is a very easy to use service as long as you have a Twitter account. Infact,you can use your Twitter name on Twellow to automatically register. Twellow will then upload all your updates from Twitter into your new profile. Also, in your Twellow profile, one is able to add other social links like Facebook, Linkedin, Digg etc, which they belong to.
Overall, I think Twellow offers huge benefits to Twitter users and is worth joining if you have a Twitter profile. In case you want to see my Twellow profile, click here