"OutTwit" is an Outlook add-in that lets you update your Twitter status and follow your friends, directly from Outlook, without having to open any other applications.
Some of the features:
- update Twitter status directly from Outlook,
- receive your friend updates as Outlook messages.
- automatically shorten URLs with tinyurl.
- international character support
- configurable new message check interval.
- ***ign custom categories to new messages
If you are on Outlook most of the time, OutTwit could come in handy...