I think you could say I hand a hand in it :P
Dav Glass did a wonderful job on the talk and the widget. If you want to learn something about Rich Text Editors I suggest watching.
He starts talking about Shine around 7 mins remaining:
I got the opprunity to work in the Yahoo booth at this year’s Web 2.0 Expo. Nick Fogler of the Juku program was looking for someone to go up to spread the word. Hopefully we recruited a few promising new Front End’s for Yahoo!.
The main focus of the booth was on the Yahoo Developer Network and on some new things like fire eagle which is an awesome geolocating service.
If you are interested you can see a few pics at:
http://flickr.com/photos/14261072@N08/tags/web20expo/