I'm in agreement with Vekseid and Andy that the Occupy movement needs to get involved politically as a major part of its strategy, but I'm not sure this has to translate to just voting their own indie candidates into the U.S. Senate (right now I'm only considering the U.S. movement, though it's got parallels in many other places). The Tea Party could go for that path with some success, but it had powerful sponsors, the backing of the Fox media machinery and a number of candidates who already had personal fortunes to dig into for campaigning. Very few in the Occupy movement are likely to have even half a million bucks of savings they can readily use to toss into an election fight, many won't even be able to get a big loan in the bank and surely not for electioneering or activism. So aiming to influence some established candidates or would-be candidates sounds like a better idea to me. Or, in the long run, to build a new party, perhaps to the left of the centre of the Democratic party but above all taking in that things have changed.
But above all, to get the attitudes of the voting public lifted, to educate the public, to question planted ideas such as "you only have a right to speak, or to question those who are speaking in here, if you can personally pay your way to what the stuff you're proposing will cost" and "I know what I'm thinking so don't disturb me with facts". Both of those lines of thought are strongly part of the climate on both sides of the Atlantic, and have been dumbing politics down. Well, it wasn't always this simplistic. Let's say ten years ago the, eh, discussion climate made it a great deal easier to get through, bring new issues and question the media than it seems to be now. Things changed a great deal after 9/11, the media became a lot more paranoid and less willing to allow for debate, but now that there is actually a user-driven base that talks and publishes its own stories, its own images, its own insights, that's a better foundation for a new movement to raise th awareness of the public than there's been for several years.
So I think the Occupy movement needs some strategies, and a talking culture, that aim longer than this election season, even longer than the next four years. Things are not going to be all fine and dandy within the next two years, even if there is an upsurge of resistance to greed and a cabinet and a senate willing to work with the people. It needs to have a lasting presence on the ground, in cities and country, in the media, and probably in Washington. It also needs to connect with sister movements outside the US.