Review for Scriptish by David.P
Rated 1 out of 5 stars
Scriptish did nothing when presented with this userscript:
https://greasyfork.org/en/scripts/21391-youtube-comments-sidebar
Also, there were absolutely no instructions about how to install a script.
Greasmonkey otoh instantly recognized the script and installed it with a nice dialog and after one click.
So I went with GM and uninstalled Scriptish.
To create your own collections, you must have a Mozilla Add-ons account.