Just watched the John Hanke, Jack Dangermond session from Where 2.0 using Seero, think Qik with maps. Actually worked really well, along with the IRC channel you get a good idea of what is happening.
As to the presentation, there is great benefit clearly from combining the strengths of ESRI tools is terms of geospatial data creation, management and analysis with Google expertise in organising and publishing information. From the “fat end” of the long tail, the ability to expose “professional” GIS data is vital for the ongoing development of the Geoweb.
Some good comments from Jack at the end in answer to a question from the floor, making this possible technically does not mean that it will be any easier from an operational perspective for some organisations to publish their data.
There is still much work to be done to solve that issue, especially here in Europe.
UPDATE : You can also follow Where 2.0 from a distance via Mulitmaps’ John McKerrell, who his doing an excellent job live-blogging at http://blog.johnmckerrell.com/.
Written and submitted from home, using my home 802.11 network.