Brain scans show a direct link between the number of Facebook friends a person has and the size of certain parts of their brain.
It's not clear whether using social networks boosts grey matter or if those with certain brain structures are good at making friends, say researchers.
The regions involved have roles in social interaction, memory and autism.
Do you let your kids have access to the internet? Would you consider cutting down their computer time following this research?
Have your say in our Daily Dilemma group discussion...See more