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Mastercard and Visa face backlash after hundreds of adult games removed from online stores Steam and Itch.io
(www.theguardian.com)
This is a most excellent place for technology news and articles.
if we're talking one-off transactions, this is no problem. You simply get enough crypto for your purchase and spend it. You don't invest all of your money in it and you can circumvent the Visa/Mastercard garbage.