EncryptIT

EncryptIT is the easiest way to encrypt text and decrypt text.
1.) Open app and where it says "pass here" type anything you want, BUT make sure you let the receiver of the encrypted text know your passphrase!
2.) Type what ever you want in the text field. Click encrypt.
3.) Copy or cut the output.
4.) Send to someone and have them type your passphrase and paste the text.
5.) Click decrypt.

Check out http://www.encryptit.tk for step by step with pictures.

You can even encrypt the encrypted message as many times as you want, for more protection just make sure the receiver also know how many times to decrypt.