Although I've made political comments on Facebook, my husband's family is clinically insane (well, many of them consider themselves "Tea Party-ers" so consider the source) Some of them have actually Tattled on what I have mentioned on FB, to OTHER PEOPLE and "reported" it to my MIL, who NEVER uses a computer ("I don't know how to use them things." ) and she went whining to my husband, who also has never seen a FB page in his life.
My husband also thinks EVERYBODY is out to get anyone who posts things on places like Facebook, and insists (despite the fact that I have not posted anything on FB since some blizzard pics in January) that I have not been able to find a job yet is due to a few comments I posted about the Devil GWB on FB. (Mostly, a funny pic, with him saying, "I fucked you all. But, thanks for blaming it on the black guy.")
I don't put sexual information on FB. My kids are my "friends" as well as friends of my kids and my nephews and nieces and it would be inappropriate.