The second round of Tea Parties were held around the country on July 4. The Christian Science Monitor has a concise overview of the movement as it stands at the moment. The debate is now focused on how many parties were held and how many showed up. Not surprisingly, supporters claim large numbers while opponents argue the movement is running out of steam.
Movements are indeed difficult to sustain, but opposition to taxes and government in general have led to mass movements before, so we'll see how this progresses. The movement still needs some cohesive center, in my opinion, if it is going to survive. Perhaps a spokesperson. Sarah Palin is available.