That really depends on your field of work. For web developers, maybe not, for admins: yes. Also, they might not be the thing people hear about first, but they

That really depends on your field of work. For web developers, maybe not, for admins: yes. Also, they might not be the thing people hear about first, but they are still heavily driving actual adoption. (FWIW: I'm chair member of the largest european Ruby non-profit, I speak to a lot of newcomers ;))