Important safety tip: Please read the instructions for TweetMyMac carefully, especially the part about creating a separate Twitter account for your Mac -- do not use your regular Twitter account, or anyone you follow will be able to control your machine.
We have previously covered some of the ways in which it is possible to remotely control a Mac at home or in the office. Most of our suggestions have required the use of Mail in order to process some rule and kick off a script or Automator action.
Alex P over at TheMacBox aims to change all of that. Enter TweetMyMac, the little program that lets you get screenshots, iSight snapshots, or launch a program through the use of Twitter. While the list of commands available is not currently as comprehensive as what your imagination can create with a little AppleScript or Automator whizzbangery, it is a good list and growing as well.
An obvious benefit of this approach is the ease of getting everything set up. In the past it took an AppleScript to call another Automator action or some other kludgey-at-best method to get things working. With TweetMyMac there is very little effort required for setup.
Another neat feature is that TweetMyMac will run a shell command. With a little scripting you can create your own custom commands. And using the previously-covered technique of sending tweets via the command line you can have your custom commands send information back to you as well.