I understand, it's not an easy task, but the browser becomes unusable, if every time I install a new extension, there is no quality check whatsoever, and I end up having to restart in troubleshoot mode to find out which extension is causing parts of the webiste I am visiting to now show up. It's just frustrating. I very much value having to many extensions and that's why I use Firefox on a mac as the main browser, but something has to be done. Extensions should satisfy some basic rules and not cause malfunctioning!