if I want to enable my readers push copies to their friends,...

if I want to enable my readers push copies to their friends, and they're in circles like Slashdot, Wired, Boing Boing, who never meet face to face, just online, well i need to give it to them in a suitable format so they can do whatever they need to do with it. SMS, MMS, Email, FTP, Cut and Paste, P2P, all are valid.