More than one-third (34%) of Americans are "tuning out" social networking sites, with 39 percent doing so because of rude behavior, according to a new survey by Weber Shandwick and KRC Research.

Fortune 100 companies don’t quite know what to do with Twitter, according to a new report.  Public relations firm Weber Shandwick instead painted a picture of big corporations just staking out their territory and then occasionally issuing the 140-character equivalents of press releases.