TAKEN FROM CNN ARTICLE HERE - http://www.cnn.com/2011/TECH/social.media/05/26/facebook.facts.cashmore/index.html
1. 56% of Americans think it's irresponsible to friend your boss on Facebook
A survey released in February 2010 showed the majority of Americans don't find it socially acceptable to be Facebook friends with their boss. The study of 1,000 people by Liberty Mutual's Responsibility Project suggests that despite an increasing overlap between our work and home lives, we continue to value a separation between the two.
2. Facebook links about sex are shared 90% more than average
Facebook confirms the adage: Sex sells. From February until May 2010, social media scientist Dan Zarrella processed 12,000 links to news sites and blogs. He discovered that links about sex were 90% more likely to be shared on Facebook than any other subject matter.
3. People in Facebook relationships are happier than single people
In February 2010, Facebook marked Valentine's Day by comparing the relationship status of its users to their happiness -- this was surmised based on the level of positive or negative sentiment in the user's Facebook updates.
4. 21% of people would break up via Facebook
A June 2010 survey of 1,000 Facebook users -- 70% of whom were male -- found that 25% had been "dumped" via Facebook (via their significant other updating his or her relationship status).
5. 85% of women are annoyed by their Facebook friends
For women on Facebook, friends can sometimes be irritating. In aMarch study conducted by Eversave, 85% admitted to having been annoyed by their Facebook friends. Of these annoyances, the most cited was "complaining all the time" (63%).
Other pet peeves included "sharing unsolicited political views" (42%) and "bragging about seemingly perfect lives" (32%).
6. 25% of households with a Facebook account don't use privacy controls
A June 2010 survey from Consumer Reports stated that "in one of four households with a Facebook account, users weren't aware of or didn't choose to use the service's privacy controls."
While Consumer Reports chose to interpret this finding in a negative light, I'd propose a contrary view: Seventy-five percent of households did take the time to understand Facebook's privacy controls, suggesting that privacy remains important to our society.
7. 48% of parents friend their kids on Facebook
On the question of whether it's OK to friend your kids on Facebook, parents are roughly split down the middle -- 48% have chosen to do so. Respondents in a May 2010 survey by Retrevo admitted that this could be "awkward at times."
Parents were also asked about the minimum age at which their children should be allowed to sign up for Facebook or MySpace. Twenty-six percent of parents replied "over 18," 36% said "16 to 18," 30% said "13 to 15" and 8% said "under 13."
8. 47% of Facebook users have profanity on their walls
As previously mentioned, a new study by the reputation management service Reppler has found that 47% of Facebook users have swear words on their walls, with these profanities being posted by a friend 56% of the time.
9. 48% of people say they look at their ex's Facebook profile too often
In a January study by YouTango, 48% of respondents said they look at their ex's Facebook or other social-networking profile too often. The statistic illustrates one danger of social-networking profiles -- ex-partners are more accessible than ever.
10. 36% of under-35s check Facebook, Twitter or texts after sex
An October 2009 study by Retrevo suggested that social networks are becoming an increasingly important part of young people's lives. Among under-35s, 36% admitted to "tweeting, texting and checking Facebook after sex." Forty percent of respondents admitted to doing so while driving, 64% said they do so at work, and 65% use these communication channels while on vacation.