I checked my bank account on-line earlier and found that I had made 19 payments of £5 to a company called Skrill Ltd. I've phoned my bank and they are refunding me the full amount. The lady at the bank said the person taking the money would need your long number, expiry date and the last 3 numbers on the back of the card. The only time I have given this information in the last few days was to a well known motor racing circuit to buy tickets over the phone. Beware folks.