Apparently it's my weekend for pointing to Omar. He just wrote that he's created what he calls "Thread Killer for Outlook" with the new Visual Studio 2005 Tools for Microsoft Office - an Outlook add-in that lets you flag an email thread and dispose of it, if you don't want to monitor it anymore.

Finally, a solution to the reply-to-all problem that doesn't rely on appropriate behavior of the whole world. What a concept! Man, I need that.

Read his post here. No, it's not released yet, but hopefully he'll be able to soon.