It's a trick. The verbiage on the page strongly suggests you have to log in, but there is a little link or something to skip it. It has been a while since I bought through paypal, but I always skipped it because it was so much more of a hassle to log in.
No, I think this means PayPal recognizes tptacek's CCs and forces a log in. Even with a new card, perhaps they'll just base it on the name and refuse to process it without an account login.