It seems like a reasonable company, and I’ve used it in the past, but I won’t put anything confidential on Instapaper. I recommend Wallabag, which is an open source Instapaper replacement.

I agree that this is tough work to maintain privacy but it is important not to think it is a losing proposition. the article explains that there are tools like add-ons to FF that reduce the capability of running Javascript on your browser unless you allow it for special sites. just this on-of-the-box utility can reduce the capabilities of digital fingerprinting a lot. using these supported tools make you more difficult to track, they are improved and they are transparent in their capabilities – or not.