Cloud computing might make sense for Letsrun to deal with the spikes in traffic associated with NCAAs, Boston, Olympics, etc- Provisioning on-demand servers that would reduce the likelihood of site crashes/delays. I think Rackspace Hosting, Internap, and Terremark are some data center and managed hosting providers that may provide this.
Will talk with Rojo about this when up in Ith for Slope Day weekend
JBro