StackBot is a small C# application that is designed to post interesting questions to a Twitter account at specified intervals.
StackBot is released under the Ms-PL license.
You can find instructions on using the application, project files (for Mono and Visual C# 2010), and the source code at:
StackBot will run on any supported .Net platform. This includes Mono, so you can run it in Linux and on your Mac.
I can be reached at