Comment 2 for bug 670355

The fact that all monitors are gone when restarting zeitgeist is not an argument, because there is not guarantee that the zeitgeist daemon will run forever, so if you connect a monitor to the daemon, you have to handle the case of a daemon restart/shutdown, aka reconnecting the monitors after the restart.
I don't like the overall idea of watching extension folders for new extensions, because I consider the fact that a new extension is added a very rare one.