Feel free to use Facebook and Twitter. You know how to act like an adult. What gets some offenders in trouble is that they want to hang out with the kids or do kid things. Perhaps they see themselves as a teen but when you are a sex offender, There is a code of conduct you have to follow to keep people from overreacting. Is it fair? No, it is not but life is not fair.
I have a *cough* friend *cough* that uses Facebook all the time. They make sure they stay away from all the kid drama. They use it for family purposes only.