It's great to see a third party provide engagement metrics on an emerging space. This is a welcomed move from meaningless speculation based on Compete numbers. Thanks for the analysis Jon.
It's interesting to see how FourSquare continues to dominate Gowalla.
not sure i would read the numbers that way @jschwa --- not sure that is what jon's analysis (which is really cool) shows -- and there are a few wildcards with many many more zeros in their wake yet to be cast