And I thought we were friends ...

• Position: Facebook - Brief article

Back in Facebook's early days, the guiding philosophy about adding friends was quantity over quality. But today, users seem to be more careful about who they interact with on the world's largest social networking site--and who makes the cut as a friend. About 63 percent of adults said they unfriended people in 2011, up from 56 percent in 2009, according to the Pew Internet & American Life Project. The reasons: A recent survey by research company NM Incite found that people get the boot for everything from posting offensive comments to just being downers (see...