[Mekkanox]

It's not awkward, and it's totally your prerogative for telling a recruiter for that. If they say "well I won't work with you if you won't disclose that info", then I'd say "thanks for your time, good luck in your search." Nowadays there's always a dozen other recruiters who'd be willing to have a phone call with a developer who's actively looking. Obviously, YMMV.

As a rule, I don't tell third-parties (recruiters, etc) my current or former compensation. I ask what range the company is aiming for, and whether I'm interested or not. I think compensation is something to be discussed only between the candidate and the company.

Anecdotal story: I once was lowballed without my knowledge going into an interview set up by a third-party recruiter, contracted out by the company. They were very excited to get me in - turns out the recruiter gave the company a number that was 25% less my current salary. The company wouldn't be able to meet anywhere near my actual current salary, but the recruiter wanted to get a butt in the seat by any means.

From now on, I keep that info private until I choose to disclose it.