[jarek]

I would say it depends on who you're applying to. If it's a three-person Ruby start-up, just give them links to your LinkedIn and github, sure.

In a larger organization, the chance of your application running into a "why is there a 'link-edin' address in this email? where's the resume? what am I supposed to print?" person somewhere along the process rises fast.

Optimally in-house recruiters would translate/explain the LinkedIn thing to people who wouldn't get it or wouldn't want to get it. Depends if you're comfortable taking that chance or even care for working at companies where someone hasn't heard of LinkedIn.