I believe that submitting a secure form is no less safe than using you card in a shop, and probably a lot safer than using it in situation where you loose sight of the card, such as a restaurant. Then telephone or fax the details through. Do not enter the other card details, then Submit the form. Encrypted email is another option. PGP can be used to encrypt an email.
Public key is here.
Check in foreign funds Please don't send a cheque or money order in foreign funds. It can take four to six weeks for a foreign cheque to clear. These will be returned to sender. We can give you our bank details for funds transfer. Because of the additional difficulties and costs involved.