If this were some kind of application I could run locally that didn't require any sign up or send my personal information anywhere I might have a use for it, al

If this were some kind of application I could run locally that didn't require any sign up or send my personal information anywhere I might have a use for it, although it seems like a lot of other solutions exist in the same place in the form of personal wiki's and note apps. I don't see much value in letting someone else track the things I'm interested in over the course of my life though. Handing that kind of data over is highly likely to result in it being used against me later. Even assuming that you'd never think of using this data for market research or selling it to anyone the truth is that services are often bought up or management changes hands long after people started submitting their data.