First of all, a few suggestions for the video popout function:

1. Tweak the video popup window to make pausing (clicking anywhere on the video) and closing (clicking on the easier: sometimes the video popout is dragged around when trying to close.

2. Allow closing the video popout window by pressing ESC when in focus. Allow spacebar play/pause hotkey.

3. Add a fullscreen toggle button/hotkey and a proper volume slider to the video popout window.

And here are a few general suggestions:

1. Allow to drag and drop a bookmark into a folder in the bookmark bar, directly onto the folder icon instead of having to drop it into the list of content of the folder

2. Allow for mousewheel scrolling in the bookmark bar side popup when many bookmarks exist

3. Allow interface customization to remove unwanted elements from the toolbars.

Thank you for your time and effort and an excellent product.