In fact, I am going to quote the comment I left there:
Simple minded perhaps, but a cultural/academic/sports boycott seems one of the few avenues of action open to people of conscience who aren't rulers.
I'm not naïve about what a serious boycott would take. Boycotts that accumulate force are not just individual acts of conscience, though conscience is crucial in building them. They are organized, far flung campaigns that implement a thought-out strategy and tactics to create momentum and achieve maximum effect. They require institutional structures as well as enthusiasm. I worked on one of the most successful boycotts ever, the United Farm Workers Union's struggle to stop consumption of table grapes picked by workers who were denied basic labor protections. And I mean worked. Hoards of young staff and volunteers charged around 16 hours a day for several years to get "Boycott Grapes" to stick, not only in the United States but in Canada and Europe.
A targeted boycott of Israeli cultural and sports institutions would take that kind of organization and that kind of patient, ongoing work, but might be possible. A de facto boycott of US institutions by the more civilized parts of the developed world is already underway, very quietly -- inadvertently abetted by post-9/11 U.S. visa policies.
This essay, by a U.S. academic, presents a well thought out call for a boycott of Israel and a look toward a boycott of the United States.