Cellity, who sponsors The Mobile Technology Weblog, has updated their Cellity Communicator software with a couple of features: support for non Cellity email addresses (e.g. Gmail), and integrated support for Twitter.

With Twitter support, you can see your timeline as well as send public and private messages. With external email support, I'm not entirely sure how it works. It took my Gmail (or Googlemail) credentials, but it doesn't seem to want to show me messages I have in my gmail.

While it's great that the application is J2ME, meaning it will work on more handsets, I'd like to see the application signed so it can be used on more handsets. Carrier-branded AT&T handsets tend to require unsigned apps to prompt every time it connects to the network. T-Mobile handsets in the U.S. tend not to allow unsigned applications any access to the network. In either case, an unsigned application is utterly unusable. Hopefully, they can correct this in the future.