Valve has confirmed that banks supporting PayPal are the reason why PayPal isn't available at Steam's checkout, and that it ...

PayPal is the latest payment system to stop processing Steam transactions in some countries due to alleged concerns about explicit games on Valve's storefront.

PayPal has cut off a massive number of currencies on Steam due to an ongoing dispute about supposedly unacceptable content.

A mass purge of sexually explicit games exposes the little-known yet all-encompassing system of ‘financial censorship’ ...