You have nothing to worry about. FCRP's website does not ask for or store your credit card information. When you pay/renew online, your payment is processed by PayPal over a secure site. So, your credit card information is not at risk.
Like most websites, FCRP's forum pages and the Blog are not secure because there is no personal information stored on them.
If you have any remaining concerns, I'd recommend that you change your password at regular intervals for maximum security.
--JM