If you're looking to branch out of your social network box, your best option may be Twitter.

CNN: Does class decide online social networks?

This pops up another box which gives an option to hide friends.

BBC: Managing your privacy on Facebook

Charing Cross Theatre said it was not reasonable to require them to include the commission fee in ticket prices because the website also gave theatre-goers the option to book in person at the box office, where no commission was payable.

BBC: Box Office sign