I think this post alone makes it clear that you're not doing this out of anti-Semitism but for the original reason. And I have not, btw, seen any reference to same elsewhere, though to be fair my friends-list has few people even mentioning this little walk-out.

That said, before you do it "because of" the interview, you may want to read his post about why it doesn't reflect on SUP: http://anton-nossik.livejournal.com/16069.html

Also, if people stop writing but still read those who are writing, while they won't get as many page hits, they'll still getting ad revenue from the people in the "walkout". I wonder how many are planning to avoid the whole site, vs. just posting which is all I've seen called for?