Cloak Your Connection to Foil Firesheep Snoopers
If you're serious about protecting your surfing from prying eyes while on an unencrypted public Wi-Fi connection, the onus is on you to lock down your connections. Using virtual private networking (VPN) is one of the best ways I know to do that.
Firesheep has raised the awareness — and hackles — of Wi-Fi users all over the world. It exploits an old, well-known problem called "sidejacking."