It's probably been stated a million times before but it's hard to remember what coding was like before github. CVS and subversion - what's that? Github is so pervasive that when a project uses another git code sharing site you just get annoyed. Github Issues may suck, but it's so darn convenient and so well integrated. It's far worse when a project uses another ticket tracking system and just uses github for pull requests. Just give in to our new code overlords and go with the flow.
> Github is so pervasive that when a project uses another git code sharing site you just get annoyed
Bitbucket's ability to lock down branches is pretty nice.
> Github Issues may suck, but it's so darn convenient and so well integrated. It's far worse when a project uses another ticket tracking system
I don't feel this is true, having worked on projects that used Jira, Unfuddle, Pivotal Tracker, Assembla, Trello, etc. Of course, none of those systems have the killer feature of turning a ticket into a giant scrollfest of "+1", emojis, and animated gifs.