Last week, Mythic's payment provider overbilled Warhammer customers. This week, rolled out an "offer wall" as a way to obtain Turbine Points for the DDO store. I'm a bit surprised by the difference in reaction between the two.
Billing players multiple times - hitting some players who pay for their subscription with a debit card with fees from their banks in the process - was the very last thing that Mythic wanted to do. I'm not saying that this absolves them of responsibility, but I genuinely believe that this was not intentional. At best, they will have to refund the over-billed charges and emerge with a PR black eye the game can ill afford. At worst, they could be out much-needed revenue in the form of canceled subscriptions and any bank fees they opt to reimburse players for (assuming that EA's lawyers don't make the payment provider cover them). Mythic has absolutely zero incentive to permit, much less encourage, this sort of debacle.
By contrast, the currency offer wall is exactly the system that has given Farmville such a bad name. At best, these offers tend to be ill-advised ("sign up for more credit cards!"), the majority will literally install some sort of spyware to track consumers' online activity, and the worst will commit fraud and identity theft. It is nigh inevitable that at least one bad apple will fall through the cracks - and neither Turbine nor their payment provider have any incentive short of consumer outrage to crack down on these lucrative scams, because each of them gets a cut.
Perhaps most telling is that the Turbine reps aren't even remarking about players posting proudly that they used some throw-away email address and intend to immediately cancel the services they signed up for in return for pennies worth of Turbine points. A legitimate business would have to march in and lay down the law with the clause about how defrauding the system is a bannable offense, etc. The scammers' real goal is the spyware installation, not the throwaway email addresses from people who think they're smart enough to scam a scammer.
Personally, I'd much rather forgive the honest mistake than the system that is built around exploiting the customers who fail to read - or understand - the consequences. Unfortunately, like most of these ever more aggressive monetization strategies, the only vote players who don't like it have is to give up the game entirely. Most players in that boat weren't paying for the game anyway, so their loss is more than offset by all the juicy offer revenue.