Microsoft Research Labs have released a new Outlook addon called SNARF (that stay for Social Network and Relationship Finder).
SNARF is basically an addon for your email client that can be used to sort your incoming messages by their importance. 
But, what is the definition of "importance" for this tool? The number of emails that a certain person sent to you? The sender? Mmmm... I'm really sceptic.
It's so difficult to decide if a mail is more important than another based on these criterias I think. If my manager sends me a humor email and a person that I've not on my address book sent me a work request, what is the most important email?
SNARF will be able to order them? I'm not so sure. However, I'm curious to see the opinions of voluntaries that will test the tool. 