"Join the Impact" protests followed by....what?

The Join the Impact effort to protest against the passage of Proposition 8 specifically, and in favour of gay marriage generally, proceeds apace. Protests are intended for across the entire USA. There's even an effort to make it an international effort, although the page for Australia doesn't exactly inspire confidence that there'll be much of any action here: looks like someone in the US just threw up something saying "gather at Federation Square in Melbourne everyone! And nobody's planned any signs or anything, so organise your own!"

I've read a little bit about grassroots mobilisation efforts. Their biggest obstacle, from what I understand, is keeping the momentum going. It's all too easy for them to falter in the face of unclear direction about what to do next. Even worse, the energy that inspires them can turn in on itself, and the people involved can end up doing nothing but bickering amongst each other, spending so much time fighting about "how we should go forward" that the movement as a whole never does go forward.

I don't know how things are going for the protests in the US. There seems to be a lot of raw enthusiasm. But to date I haven't seen any ideas about a follow-through. What happens after the protests?

Yes, I realise that I'm trying to spur a debate about "how we should go forward". As long as any grassroots movement doesn't become entirely an argument about that, I think it's a productive question. Up to a point, anyway.