Here’s a really short video explaining Google Wave, Google’s new document collaboration app. In the ad world, I could see this being really helpful for tracking feedback and changes on creative as it goes through rounds of revisions and approvals and finally into production. Email does suck for trying to piece together a ton of different user feedback and iterations of changes. I love how Wave lets anyone who is just joining a project to playback the whole conversation and scrub through like a video timeline to see who said what and when. So awesome. Hey Google, give Holland-Mark an invite! Anyone know any advertising agencies who are trying the Beta?