FeelFree uses the safest online credit card payment system market:
At FeelFree we use SSL, an internet security protocol used by internet servers to protect the confidentiality of information transmission. (To check whether you are on an SSL page, check the URL. It should start with https instead of http.)
When you pay by credit card, your payment is made over the bank's own "payment gateway". In other words, your payment goes directly to a bank.
This means that your credit card information is only revealed to the bank. Neither FeelFree nor anyone other than the bank has access to this information. And no one other than FeelFree, not even the bank, knows what service you have purchased with your credit card.
FeelFree is owned by Siempre Free, S.L. (Tax ID No: B-20933560).