I use a credit card or check card. Never had any issues. I only buy from reputable vendors and don't buy from sites that have deals which seem too good to be true. Won't buy from China. I also look for the security badges on the site and won't buy from a site that looks like they didn't spend any money on web design. I also only use Macs.
I think my China purchases have been the safest since they are allowed to use PayPal - and PP is not 100% great, but in comparison, they offer a buffer that other processors / shopping carts / servers / hosts etc appear to be compromised with.
I thought someone was compiling data on these fraud charges to see if there was a link connecting them? I've heard everything from poor cart programs, to hacked servers, to questionable payment processors. I'm not sure, but I don't think a vendor has ever been found as the source of the problem since most never get the cc information. They just get an authorization code for a specific amount from the payment processor.
I've almost sprung for a prepaid card, but I'm not thrilled with the upfront charge either. $5 on a $15 charge is hefty. Even if I do get a $50 card, what about the remaining after a $35 purchase? That doesn't seem easy or convienent. Let's see, I could buy a $25 card and a $15 card = not much different plus I've got a $10 activation. So I should just buy more to the $50 limit or trim my purchase down by $10 - but it's something I really need and can't buy locally. This is crazy.
The only reason I might get ticked with vendors is that they haven't been more proactive on resolving these issues. It shouldn't take a consumer forum to lead an info data collection effort to locate the weak spots, and I'm not sure if any vendors have contributed to the effort. But then I'd like to see independent vendors form a collective so their voices are heard in DC too. (sigh) Oh well...
Any results yet?