Dave Fletcher picks up on my riff about grid sensors or sensor nets and mentions a couple of sites that give real time data for seismic data (both for Utah---Dave's ever loyal). As far as I can see, neither of them make this data available in a way that something other than a human can use it. I'd really like to see more of these sites following correct principals for putting data online. It would be so easy to do and cost almost nothing at the margin.