you know, among ~100 interview requests I've got from HR departments, the first question always was "hi, you are Rubyist, right?" -- "yeah, that's true" -- "we would like you to come to our office and talk" -- "ok, I just want to inform you I'm not making websites and so I'm not Rails developer" -- "oh, sure, you will not"
then you come to their office and it appears you just wasted your time, because only 1-2 guys in that company realise the difference