Senh: I've already been seeing some of that in action. I've noticed that the results I get when I'm logged-in are different from the results I get when I'm not. Sometimes, I get results from sites that I'm Plus One-ed on. Sometimes I get results from sites that I visit often, like MoviesWithButter.com, for instance.
Senh: Interesting that the one site that Google supposedly targeted with their previous algorithm has almost no effect on the site's traffic.
Last Thursday, Google launched a new tweak to their search algorithm. It was targeted at content farms, which many consider to be spammy sites whose content are created solely to attract search engine traffic for specific keywords.
I do notice more and more of these sites on Google’s search results. For me, the main offender is ezinearticles.com. Most of the articles I get from there are completely useless. They’re just keywords being repeated over and over again with a bunch of fillers. I can see why Google wants to push those sites further down their search rankings.
Senh: No wonder. Traffic to my site dropped by 30% from Wednesday to Thursday. The example used in the article from eHow is borderline, but here's a better example: http://ezinearticles.com/?Why-Social-Media-Optimization-Needs-to-Be-Done&id=5720775. There's absolutely nothing useful from that article. All it does is mention the keywords "social media optimization" a bunch of times. There aren't tips on how to do the optimization. There's no even a real discription of what it is.