[atomical]

Common problem in the tech world. I have this conversation with every tech recruiter I talk to.

[ExpiredLink]

I have seen programmers who worked in both languages but couldn't tell the difference.

[mkopinsky]

Such programmers have actually worked in neither.

[driverdan]

Why would you even bother talking to them? I'd hang up / kick them out.

[atomical]

You just have to hope that their 'client' knows their shit and can tell the difference. But in short, it's useful to use recruiters for opportunities that aren't on the job boards and to poll the market.