The minimum age requirement to become a member of Facebook is thirteen (13) years but if anyone under the age of 18 wants to join Facebook, he should be studying in some high school or college else his membership would be in violation of Facebook terms.
If you are worried that some malicious cracker or your employer could be violating your privacy and reading private emails, try Whisper Bot - it lets you send secure and anonymous email to anyone for free without an account.
How to Disable Facebook Chat so that none of my friends can see me online or send me an IM message via Facebook.
How to send an email messages anonymously and secretly so that recipient will never know who sent that message and from where.
Privnote is a free web service that helps you send secrate notes over the Internet. You get a link to the note, and once that link is clicked the note is deleted so it can only be seen once.
Firefox has a Clean Private Data feature that clears all your web surfing tracks - everything including cookies, cache, temporary files, web addresses and stored passwords are deleted from the computer.
Worried that boss is reading your email in office ? Read some ways to prevent people from snooping your email.