Contacting SW Community Friends individually

Lets say I have a question or want to get an opinion from one of my SW Community friends and their e-mail is set to private.  How do I send a personal message to them using the forum?  It appears to me I can send all my friends a group message.  The functionality I'm thinking of would be similar to other social networking sites, i.e.:  Facebook or LinkedIn.SolidworksGeneral