Most Facebook users receive more from their Facebook friends than they give, according to a new study that for the first time combines server logs of Facebook activity with survey data to explore the structure of Facebook friendship networks and measures of social well-being.

These data were then matched with survey responses. And the new findings show that over a one-month period:

• 40% of Facebook users in our sample made a friend request, but 63% received at least one request
• Users in our sample pressed the like button next to friends’ content an average of 14 times, but had their content “liked” an average of 20 times
• Users sent 9 personal messages, but received 12
• 12% of users tagged a friend in a photo, but 35% were themselves tagged in a photo

Authored by by Keith Hampton, Lauren Sessions Goulet, Cameron Marlow, Lee Rainie.