I think the article is kinda wonky, but Rep. Pelosi pretty much is the poster child for the American political / corporation corruption. She owns quite a bit of "clean energy" stock and pushed the legislation to stuff she has stock in. We make the President put his money in trust, and I am starting to think it wouldn't be a bad idea to do the same with Representatives and Senators.
This is a problem that both political parties fall into. I sometimes wonder if a no donations from any group are allowed (corporation or union).
It probably didn't help that she gave here opponents the perfect soundbite for the 2010 election ("But we have to pass the bill so that you can find out what is in it.").