Will you fire half of your friends in 7 years?

Interesting study showing that the size of personal network remains stable over the years though “half of all friends” are replaced every 7 years.

“The results showed that personal network sizes remained stable, but that many members of the network were new. About 30 percent of discussion partners and practical helpers had the same position in a typical subject's network seven years later. And only 48 percent were still part of the network. This finding goes against previous research which had showed that social network sizes are shrinking.”half of all friends are replaced every 7 years