very nice Rated 5 out of 5 stars

Pretty cool add-on, really!
I'm using this for a long time on facebook and performs quite well.
Many people are too open and effusive on social networking sites.
They do not realize quite the case that private conversations are not private at all.
And one day their confidential messages can be made public on the network and will be available to all.
Therefore You must take care about your privacy right now

things that could be added:
- Passwords manager for encryption, as in CryptSocial (ability to use longer and stronger passwords)
- AES (256 bit) or/and Twofish (256 bit)
- Cascade encryption

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LeetKey 1.4.3. FF 8.0.1