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I guess, you are missing a source for "[1]". Why should it only be possible since 2010 to "secure things end-to-end"?

Off-the-record messaging (pidgin-otr) is available since 2005, PGP since 1991 and the theory behind it (RSA (1977), Diffie-Hellman key exchange (1976), etc.) is much older.

Your site is great!

To add similar services I've been using for quite a while:

http://www.noisli.com/ (very nice UI with changing background colour, a distration free editor and so on)

http://mynoise.net/NoiseMachines/ (quite professional)