Getting more than you send on Facebook?

NEW YORK - You know how it goes at one of those all-you-can eat buffets?

Most people take normal, human-sized plates.

Then there are those who pile on the grub like it's the last meal they'll ever eat.

Looks like it's the same deal with Facebook.

A new study indicates the average user ends up getting more messages, "likes" and "pokes" than they send out.

Then, there is the group of Facebook "power users" who do more than their share of well "sharing."

The report is from the Pew Research Center -- and comes two days after Facebook filed for a $5 billion initial public offering of stock, which could make the company's value close to $100 billion dollars.