Anyone have thoughts on using services like pucatrade.com (service for trading Magic the Gathering cards) from a #freesoftware perspective? It seems like one of those grey areas as they're not replacing a software but an in-person process. Their platform is (naturally) proprietary and they use non-free javascript. I'd like to expand my trading options but I don't know if I want to do it at the cost of using nonfree software. I suppose another alternative is to maintain a list on my personal site and just hit the weekly reddit trade threads or something.