I'm thinking of starting to sell some of my stuff on eBay, but I'm not quite sure about the whole PayPal thing. I've never bought anything online before, and I don't know exactly what PayPal is. I went to there website, but never really got a clear description, so can somebody just give me a simple description of PayPal? From what I can tell, I think its like an account that you start with so much money and then when you buy something, money goes from your paypal to the seller's and then when you sell something, money goes from the buyer's into your paypal. Is that ever close to what it is?