[woodall]

My over engineered solution. Catch the bad letter and replace it with a something else(i.e. another value mapped to a separate fontface). Translate the request on the server side being sure to reencode the page if it contains a 'bad letter'.

Demo: http://christopherwoodall.com/ceasar/

[eli]

Well, yeah, you could also get a proper VPN that encrypts your traffic, but that's a bit beside the point.

[sp332]

That's pretty impressive :)