Is it safe to disclose serial numbers?

So, I was going to trade my MacBook Air for and iPhone 5 on craigslist but called it off. I gave my MacBooks serial number and the other person gave the iPhone 5's serial number, can the person do anything besides lookup warranty information with my serial number? I don't think they can but just want some clarification. Thanks.

Did some research and it looks like it will be fine Sorry for the wasted thread.