This addon states it doesn't use any keyboard shortcuts. However, as long as it is activated, pressing the Escape button three times will blur my current tab and pressing Escape four times will close the current tab and open a new one to startpage.com. This has broken all my trust in startpage's legitimacy, I'll both uninstall this addon as well as change my start page.
/edit in response to the dev: "up front"? I searched for that "feature" back then, but nobody seemed to know anything about it. After your reply, I searched both the addon's mozilla page as well as your homepage for ANY trace of it. Well, yes, you do mention it in one dedicated article (not on the addon's page, not in the features list, nowhere but this article) that I only saw after asking Google about it. Yes, Google.
Also, why is it not possible to delete this "feature"? Can't be too hard to code that in, can it?