In case you're unaware of what happened, last week, Evernote announced that it's going to allow some of its specifically trained employees to read the users' notes in order to help improve the service's machine learning capabilities. Unfortunately, the company simply decided that without consulting its customers first and without even offering an opt out for those who wanted to keep their privacy. As you can imagine, many were outraged by this and in voicing their opinions they managed to make Evernote give up on its plan. From what I understand, the company still wants to use user data to improve the machine learning algorithm, but this time it's going to ask for the users' express permission by creating a program that only those who wish to help can join. As far as I'm concerned, that's the right way to go about it.
Since we're talking about tools that can help you jot down your ideas, you may also want to read: "Taking Notes Can't Be Easier: Best Note Apps and Services" or "Minimalist Writing Instruments for Digital Age".