hey! writes "On February 18 of this year, global giant payment processor PayPal sent eBook publisher Smashwords an ultimatum: if Smashwords didn't remove all eBooks with certain erotic content from its catalog in the next several days, PayPal would immediately stop handling payments. Smashword's TOS already precluded child pornography, but now PayPal wants them to also censor depictions of consenting, non-related adults acting out incest fantasies. Likewise, fantasy novels in which human characters transform into non-humans are affected if those characters have sex. ZDNet has a summary of the impact of these changes, which would among other things ban Vladmir Nabokov's Lolita. As outrage mounts, finger pointing is in full swing. Smashwords blames PayPal, and PayPal blames the banks it deals with. The crux seems to be that erotica buyers have a higher rate of 'chargebacks' — customers who buy stuff then demand their money back. Fair enough, but is a customer really more likely to return a book because it depicts one kind of fantasy between consenting adults vs. another? Perhaps the problem is just the quality of writing."
Note: as you can probably tell from the summary, the linked articles (while factual in nature) discuss subjects that may not be suitable for workplace reading.