A safety tip when buy and selling online.
I used to trade Kinder Eggs Prizes online with other collectors from, well, everywhere.
I was told that the best way to know who you're dealing with is to get callingid.com 's toolbar which tells you where the website owner is from, what's his real address and if he's a know trouble-maker.
I never had trouble with trades before but I downloaded it as a precaution. It's asspecially helpful now when I order supplies from the far east. If it tells me that the Japan Food Export Company is actually located in Korea I'll know not to order from them unless I want low quality products.
If you're a trader or customer online you should download it. It was free when I did about 3 months ago.