I'm definitely in this camp. I read enough programming related news that I know what new technologies are emerging and what problems they attempt to solve. But

I'm definitely in this camp. I read enough programming related news that I know what new technologies are emerging and what problems they attempt to solve. But these days I wait until things have gained enough momentum that I think they'll stick around for at least a few years before I'll even consider adopting them for real work. That said it's good to keep learning new things just for the sake of learning so I will still sometimes pick up something new just because it looks different enough from things I'm already familiar with.