I just noticed that Jeff has deleted this highly-upvoted accepted answer (10ks only) to this question. The answer is good and complete. It's highly upvoted (+19). It's the accepted answer. Its only apparent problem is that it points out a lot of declined feature-requests on the subject, i.e. it disagrees with the SE stance on this topic.
Questions and Answers on Meta shouldn't be deleted just because the Team disagrees with them. They should be mature enough to handle disagreement, and allow discussion on a topic.
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I've added basic contact info to my profile's bio page, as have quite a few other people.. It's hardly ideal..
There's at least 4 uservoice tickets on this:
* User messaging or wall
it's possible we might have some kind of messaging function later, so as not to expose emails but let users communicate. But it's low priority.
* User Messaging
recommend adding contact info to your profile -- basic HTML is allowed in the "about me" field!
* Messaging between users
* How do you send a message to a stackoverflow user?
Here's another deleted accepted answer (10ks only) that was converted to a comment.