The war against search “spam” continues. Blekko, that uses human curators to qualify results and displays refined searches via slashtags, did a major update on how it shows results. And Google is rolling out the latest update to its Panda technology that is mostly aimed at diluting the influence of content farms. I’ve said before that Google’s search results spam problem may be more an issue for the digerati than the masses, but nonetheless, Google finds itself forced to respond regularly. Some gush a bit at Blekko, which is hardcore anti-content farm, but it feels like a niche offering. Even Blekko admits it needs to grow five or ten times before it starts to make a mark on search. And regular readers know I’m skeptical on social search overall.