The new conversation threads view in Outlook 2010 is a great feature, it already has improved my inbox view a lot. Here is a video from the Outlook team at Microsoft that shows what happens when a thread gets split into several threads. It took me a day to get used to it (old habits die hard) but now that I’ve got the hang of it, I wouldn’t want to miss it. Now I am hoping we will migrate to Exchange 2010 soon too, so that I get the threaded conversations on my smartphone too.