I'm curious, would you be more comfortable if all your content were encrypted such that not even the app developer (me) could read it? Or would only a local index do?
My main problem is: As I understand it, the plugin sees what I see and just sends away everything. Including payments and balance in my bank account, business messages in Basecamp, code in private Github repos and content on sites that are not yet public I've signed an nda for.
The benefits don't justify the risks for me. Using incognito mode to avoid a plugin I've installed isn't really feasible.
As a second reason: I have mediocre internet connections most of the time since I'm traveling. Therefore I try to avoid as much requests as possible.
But this is HN, and we wouldn't use even an AES-512-encrypted service if it has to leave our computers. Our password could still be cracked with enough computing power. So, we'd all be extremely happy if you could make a version for paranoid people like us.
Also, I don't know how your indexing works, but please make it easy to backup (just allowing us to define the index folder would do). Possible data loss is the tradeoff with local content.