[404 Check: was link to http:/ / freeshoppingtips. blogspot. com/ 2007/ 05/ 10 -tips -to -safe -online -shopping. html, anchor: Blog about Online Shopping Safety] . My commentary in italic below.
How safe will your credit card details be? You will never know! Does it matter? You are protected from fraud by your credit card company!
Are entering your payment details on a secure page? It's been a long time since I saw any non secure page for credit card payment information. The real question is whether the information is stored securely by the vendor. The risj of disclosure is much higher from a vendor database than someone snooping on your connection, I should think!
Does the online store value your confidentiality and privacy? Probably not, just use a good spam filter
Does the online store have contact details? And do you verify the information if its there?