Apart from various language "features" that really require getting used to (e.g. error handling), it's mainly @Golang@twitter.com's philosophy on $GOPATH and its immature tooling (specifically go get and dep) that holds me back from building my next #opensource projects in Go.
Server run by the main developers of the project 
It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!