JotSpot's 20% day

Jot, taking a cue from Atlassian's recent experiment, reports today on their 20% day. They built some pretty interesting stuff, some of which we'll hopefully see soon.

As Mike points out in comments, Abe Fettig's collaborative editing is just brilliant. Here's the demo. Looks like it uses some Ajax magic, including something similar to 37Signal's Yellow Fade Technique. Very slick. Having used SubEthaEdit a few times, I know how useful this really is, in the right circumstance. It takes the wiki a whole step further towards true collaboration.

Ken Norton, who recently left Yahoo! for JotSpot, has a post about the hackathon.

Also, see a few more hackathon photos.