I feel that it would be very ignorant ebay/paypal to use propriatary plugins instead of web standards. If they would just build the tool with Javascript, CSS and HTML, or just let the program generate us a PDF instead of an arbitrary check for a plugin, it would always be cross-platform for Windows, Mac, Linux, iOS, Android and any future platofrm that anyone could imagine. I have my dad running linux cause his Windows PC kept getting infected even with anti-virus, since he switched, he hasn't had a single issue other than this one. Although it is not very large, linux users account for 1-2% of all web-browsing, and much more if you include Android, which is a linux varient. The paypal homepage says that over 100 Million people use paypal world wide, so that's 1-2 million angry linux paypal users. Bottom line: They are probably getting a kick-back from Adobe.
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