Be careful when you give your credit or debit card details on the Internet. Always find out whether the company has a secure site by looking for the closed padlock sign at the bottom of the screen, and look for information about the protection the company has put in place. The trader must give their name and a geographical address, not just a PO Box number, and not just their e-mail address. They must also fully describe the goods for sale and orders must be confirmed in writing. As with any other type of purchase, shop around for the best deals and prices. In most cases, you are entitled to a seven working day cancellation period where you can change your mind, but this usually does not apply to 'auction' sites. You should always read the terms and conditions carefully before buying. Watch out for high postage rates and for other hidden costs, such as VAT and other duty payable, particularly if goods are being sent from abroad. Try to get personal recommendations for companies...