Encrypt your Google chats and make the NSA sad
Google, Yahoo, and Microsoft could all make the vast majority of email vastly more secure by implementing PGP-by-default. Send: You enter an email address, a little key appears beside it if it's recognized as having an associated public key, and a warning appears that the email can't be encrypted if an additional email address is entered that doesn't have an associated key. Receive: email encrypted with your public key is colored "green" (for "secure") and the from address is colored "green" if it's been appropriately signed. With (and, I'd argue, only with) a webmail client can PGP be rapidly deployed and almost completely transparent.<p>But, this would make "intercepts" far more difficult, now, wouldn't it ...