Thanks to Sesame for the heads up:
When it comes to female consumers active on social media, Facebook is the most trusted network for product and service recommendations, according to a study released this week.
The Social Recommendation Index survey, conducted by Social Media Link in October, revealed that more than two-thirds (68%) of 10,337 online respondents trust Facebook as a review platform, compared with 56% for Pinterest, 51% for YouTube, and 41% for Twitter.
Interesting. People often seem to complain about privacy issues with Facebook but according to this survey they trust it the most. Or more accurately they trust their friends on Facebook the most.