SQUIDOO took their beta test live today. Seth Godin has created a very cool web2.0 app that let's everyone be an expert at something.
From a corporate learning perspective this is a very cool concept. If it catches on be prepared to start your internal lens creation system for your experts to publish their knowledge. I have a lens for Corporate eLearning Development however it does not come up in any of the search returns.
So check out my lens on Fall Prevention. I actually think this one will become much more unique over time and once I transfer ownership to my wife.