Just flying a kite here (hope that is not purely an English expression) because I can see there are many downsides in terms of spam, advertising etc.

However, it would be useful to have a means by which one could invite a member to get in direct contact, e.g. I saw a posting from someone recently, who appeared to be a consultant with knowledge that would benefit a client of mine - possibly to all parties advantage.

It seems like bad etiquette to start posting requests for contact into threads, does anyone have suggestions for a mechanism that would not be too intrusive?