Hey Martin, great find !
I've been looking for something like this since I started here. Scalable speed increments, scalable jumps, useful shortcuts, works without a hitch on Chrome. Thanks :)
BTW, if you want to get fancy about providing links in this forum, you can use the "Insert/edit Link" button at the top of the editing window to create a clickable link. Like this:
Get a Video Playback Speed Controller for Chrome Browser
Nicolai