Heard of Google SSL? Now Google lets you use SSL encryption on its general search page, meaning you visit "https://www.google.com" instead of "http://www.google.com". This way the things you search for are encrypted at your computer & decrypted at Google so no one in-between (i.e. your ISP, whoever's running that public WiFi) can snoop. But it's only for the general search right now, so beware: if you click on "image results" for your search term it's not encrypted anymore. You can read a more able write-up at Lifehacker.
The "real" point of this post is that I made Google SSL my default search to try it out and thus wanted to make a favicon to distinguish it in my browser. And I've come to like the one I whipped up: . Yes, it uses the old Google favicon () because dammit it's so much classier than the new one (). Also, that's the silhouette of a lock on top of it. Ok, my icon isn't that fantastic but I've found that the lock is large enough to be a recognizable shape suggesting security while leaving enough of the G uncovered to be clear it's Google.
Just trying to share something I've found useful, in keeping with the spirit of these great Internets.
Hmm, of course it seems to have a little bit of this flavor too: