Hi, the company is just me, Jeff. I've been a Mac developer for over 15 years. There's a link to my résumé from the product page, as well as links to reviews of the extension from well-known tech media.

This is just the nature of JavaScript, it has the power to do pretty much anything in a web page. My goal is to write "good" JavaScript to counteract the "bad" JavaScript of user-hostile web pages.