Got the email yesterday night while out with friends, now I'm having a really bad morning.
Not only was it convenient and having to open the web-browser although there's a "more books" section in the app feels.. "meh", but I'm also a bit paranoid when it comes to "sharing" credit cards, bank data etc. via the internet. I like to keep the number of services I provide with those to an absolute minimum. Whether or not you think that's rational is up to you, but that's how I feel and until now I could do/buyeverything I wanted with just three services (paypal, click&buy, amazon) using that data and I intend to keep it that way.
tried to link my paypal account, but it still keeps asking for a credit card in addition to that?
maybe I'll give in eventually, but for now I'm pissed/let down enough to replace comixology with comiczeal on my homescreen.