While bad Wi-Fi security is my major Firesheep worry, I know it’s already a major pain in the ass for everyone. Even as I wrote this, I see my fellow ZDNet blogger Ed Bott had his Twitter account hijacked by someone else in the Microsoft Professional Developers Conference press room. Fortunately, it was a friend so it all came out well. Since it wasn’t you that might strike you as funny. Just wait until it happens to you though and someone changes your Twitter or Facebook password on you. You won’t be laughing then.

So what can you do? Well, there are a lot of things. Some of them aren’t perfect, but they will protect you on most of the major sites. Here they are in their order of efficiency.

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