Should Facebook worry?

Google may be , but its reputation with consumers is solid.

"An existing dominance of market share like Facebook has is no longer a safety net for a company that is not providing a superior customer experience," Freed said.

Interestingly, social media is one of the lowest-scoring industries measured by the ACSI. What's worse in the minds of consumers? Airlines, newspapers, and subscription TV services, naturally.

Wikipedia gets the top spot in social media with a 78. YouTube is second with 74. Sadly, MySpace was dropped from this year's survey because there weren't enough MySpace users to create a statistically significant sample.