How evil would it be if they tried using your LinkedIn password with your profile's gmail address to access your gmail contacts? Probably 90% of people would have both passwords set to the same thing.

Pretty evil. I wouldn't be too surprised if they did, but that's a shitstorm waiting to happen, and Linkedin is still trying to uphold their 'professional' image.

Personally I don't have my Gmail address as my contact email... but I doubt many people own their TLDs with corresponding mailboxes.