Allowing Slashdot members to send private messages to each other is a vital need. There are times when
* members want to continue a conversation with each other, while drifting into off-topic territory
* one member wants to pick the brain of another and/or collaborate on Something Big
* member A is so impressed with member B's posts, that A wants to offer employment to B.
Currently, if you want to contact another Slashdot member, you use the kludge of replying to one of that member's comments. And of course there's no guarantee that member is even checking to see whether any replies are coming in. Furthermore there's no way to privately exchange phone numbers, etc. Put my email address into my profile? Are you kidding me??
Slashdot is a collection of really big brains, who are unbelievably handicapped by the lack of a way to communicate with each other. Unleash the potential! By doing so, Slashdot would attract even more really big brains.