Christakis and Fowler : Of course , picture friends and real-life friends are likely to be one and the same . During holidays , feast and Facebook go hand-in-hand . Comment: Writers say Facebook and other online networks mimic those in real world . Study of `` picture friends '' on Facebook reflected same clustering of overweight pals .
Christakis and Fowler : During holidays , feast and Facebook go hand-in-hand . Comment: Writers say Facebook and other online networks mimic those in real world . Study of `` picture friends '' on Facebook reflected same clustering of overweight pals .