Its really great addon.
but these is a problem with it.
I use a filter like this
```
youtube.com
~*cs50*
```
and also I checked "Treat keywords as allow-conditions rather than block-conditions" and I wonder that this addon open youtube homepage (which obiviously this happens when there is a 'cs50' video in the homepage) BUT when I click on that cs50 video to watch it, this addon block the `watch` page (while there is a 'cs50' in the video title under the video player). MAYBE this addon does NOT check the headings! please fix this problem