Instance owners could potentially insert ads to help cover server costs. Users would likely just migrate to a different instance, but I could definitely imagine one of the bigger instances doing that eventually.
I know that would allow you to back up the ebook file elsewhere and use it however you please, but could Amazon still potentially delete the file from your Kindle device?
Not surprised you're not finding Linux compatibility info. It looks like it was just announced. Logitech tends to not support Linux for their customization software, but I presume Solaar will add support for this device eventually.
Yet
Instance owners could potentially insert ads to help cover server costs. Users would likely just migrate to a different instance, but I could definitely imagine one of the bigger instances doing that eventually.