Paypal has started banning accounts selling anything Bitcoin-related
This is incorrect. The CEO of PayPal David Marcus has already denied these claims:    To clarify: we have no policies against using PayPal to sell Bitcoin mining rigs. 
    We don't support any currency txn whether fiat or BTC for a host of regulatory 
    issues. But we treat BTC and any FX txn the same way. We're believers in 
    BTC though.

There was a communication error in January but it was retracted within hours: http://i.imgur.com/GMC0fsd.pnghttps://twitter.com/davidmarcus/status/422632561882316800https://twitter.com/davidmarcus/status/422632849670299648