one cool feature is that the internal email let's you send and reply to messages of up to 20 people in a group not just one; however the only people you can do this with are those who have mutually agreed colaborations so this brings down risks of abuse of such a freedom to sensible proportions

better yet is that the internal email encourages you to share videos - all you need is the bookmark where the video is and on receipt of email the veiwer will be one click away

since one of my current pursitys is to search out transparency most vital knowhow videos that are on the net and get them to people who need that knowhow, this feature is an all or nothing dealmaker for why I love facebook

in the event that this is an empowerment cooperation use of the net that you too make why not join http://www.facebook.com ; search for chris macrae (the elder one) and friend me; then we can start clubbing where people already work on this collaboration pursuit