I think Area 51 needs a "Galvanize" button.
Some way of reaching out to the people who are following a site proposal to say "Hey, we are almost there! Go Vote!".
Obviously there are some difficulties, like who can click the button, etc.
You'd probably need some limits, to avoid spam. Something like "you can only click the button once per phase, or something".
Take the GIS proposal. The "hard core super dedicated" folks have managed to get us half way to the next stage. However, there are a lot of people who signed up to follow the proposal.
It would be cool if there was a way to reach out to them. Something other than the daily "these are the new questions / comments" that were posted, but more of a "hey! We are really really close now, and we need your help!".