I think that's a fantastic idea. I've been helping manage the SG's Twitter and it would be really great if I could tweet those articles in these (via @twitterusername) format easily - eg:
https://twitter.com/fedorasg/status/692266444961271808 This format gives credits to the author on Twitter and promote them as well. (eg: I really like what this guy has written on Fedora Magazine so I wanna follow him so I can just click on the Tweet's via @twitterusername)