Earlier quoted context omitted.
To be fair they haven't screwed up LinkedIn. I think they will let GitHub grow with their resources.
How about Skype, though? People loved Skype so much, it was really a feat to make people hate it.
Everyone I know is using FaceTime or Facebook Messenger. The only time I hear Skype anymore is people using it for podcasts. Obvious anecdata but it seems reasonable that services with better device integration (FaceTime) or social graph access (Facebook) would do better in the long run.