http://hhldo3tnt5solzj2bwfvh7xm4slk2forpjwjyemhcfrlob5gq75gioid.onion/en/index.html
If you
often send signed messages to people that aren't familiar with GnuPG, it's
nice to also include a link to this guide in your standard email signature
(the text kind, not the cryptographic kind). Be wary of invalid keys GnuPG makes email safer, but it's still important to watch out for invalid
keys, which might have fallen into the wrong hands.