In light of recent events (multiple threads about sudden charges on credit-cards that were ONLY used on TD websites) I decided to do a short write-up of why you should always take your precautions.
This might be common sense to some, but let me just state the obvious: You are purchasing illegal products from a seller based in CHINA. This isn't amazon. No payment processor will knowingly allow these transactions to go through.
Typically when you're filling out a form for CC payments on TD websites, this will just be a basic contact form that sends your full CC details (non-encrypted) directly to your TD. They will then take your details and fill them in on an external shill-website to process your payments.
Mod edit. The CC processor itself is most likely also shady as f*
Anyone working the TD website can fully see the entire CC-details and theoretically use it as they'd please. It's also incredibly vulnerable to any entry-hacker setting up a sniffer and just grabbing your CC information off their site.
A regular CC-payment gateway would encrypt most numbers and only leave 4 digits visible to shopkeepers (for confirmation purposes). Most TD sites receive the entire number (expiration date + security numbers) and then process it on their end.
Would I want to send my CC information sent across the world unsecured, to some illegal operation in china selling counterfeit items? No. At least not my "main" credit-cards with a balance / credit.
If you absolutely MUST use a CC, then do yourself a favour and use a throw-away card or a one-time virtual card. There are plenty of services online for virtual cards, or prepaid cards.
Regardless; paying with a Banktransfer, WU, BTC or other methods will almost always give you a further discount on your purchase - so that's definitely also something you should consider, it really makes no sense paying extra just to use a CC.
This is not me saying that you can't trust the TD's here, I'm sure plenty of people are paying with CC without further issues. They are however big targets for hacking attempts, they could have a rogue employee, shady payment processors and lots of other reasons.
Just be cautious guys. It's so easy to get an additional CC card for one-time purposes and it would save you a lot of trouble SHOULD something happen.
Raddave