I don't think distance from the line is a talk/walk dichotomy. Rather, I think it's about the respective limitations of SO and github as metrics of popularity. SO's core audience came from people who followed Jeff and Joel, who are both pretty Windows-centric folks. Meanwhile, github's basis - git - came from the very creator of Linux! It seems to me that above the line means more in the MS camp, and below the line more in the open source / early adopter group.
The standouts on above the line, things like Delphi, F#, C#, are all primarily Windows oriented. The things that are to the south-east of the broad thrust are things like CoffeeScript, Ruby, Lua, D, Go, etc. - a lot of stuff that's either fairly cutting edge, or played with by people who like to think they're on the cutting edge.
The standouts on above the line, things like Delphi, F#, C#, are all primarily Windows oriented. The things that are to the south-east of the broad thrust are things like CoffeeScript, Ruby, Lua, D, Go, etc. - a lot of stuff that's either fairly cutting edge, or played with by people who like to think they're on the cutting edge.