I have just had a horrible experience with EN whereby important notes, I had been typing for 2 days, went lost on saving. I am running EN (free version) on my Ipad 2 iOS 4.3.2. I had been saving the document all along when all of a sudden (I clicked saved) the program retrieved an older version of the document and new changes were lost. I also see that you want me to upgrade to premium in order to see historical changes to the document. Perhaps this is part of your new customer acquisition strategy. I do not want to bash the program since I've only been using it for 2 weeks but you gotta be reliable. I think you've got a good idea but reliability counts that's the only way you will win customer trust. This bad experience has made me think twice and start testing a competitor - Simplenote.