Can someone explain exactly what this is? The idea is to set up a posterous and sync it to your gmail, then plug that into as many services as possible so you

Can someone explain exactly what this is? The idea is to set up a posterous and sync it to your gmail, then plug that into as many services as possible so you can send e-mail updates that get pushed out all over the web? Where does the monitoring happen and how do you know what to monitor?