MASHABLE — June 5 — Twitter is working on adding the ability for users to separate their contacts into groups, support for sending and receiving messages by e-mail, and adding new IM and Internet channels for the service. They’re also looking to improve the way links are handled.  One of the many criticisms of Twitter is the ability to intelligently handle different media types, like links to Flickr or other image sources, and better use of inline linking.  Many of the add-ons to Twitter, like Twhirl, can do this by taking Twitter from the API and laying over their own functionality, but the Web interface has been the same spartan landscape since the service’s inception. FULL ARTICLE @ MASHABLE