Is there anything simpler? I often wonder what if all the activists, Reddit/Digg readers etc, focused on a single issue at a time, collectively phoned and wrot

Is there anything simpler? I often wonder what if all the activists, Reddit/Digg readers etc, focused on a single issue at a time, collectively phoned and wrote 1000's of elected officials every day. Would that effect some change? Is there any way to channel of the internet peoples' energy into a single goal?