The concept is great, but the restriction that Twitter puts on the number of queries you can do an hour makes it reasonably non-useful for on-demand tasks like

The concept is great, but the restriction that Twitter puts on the number of queries you can do an hour makes it reasonably non-useful for on-demand tasks like restarting the webserver. It has the seed of a great idea, though -- everyone has a Twitter client on their phone. You can sit down to any browser and issue commands.