Google's recent ranking algorithm update affected many "good" sites, who lost a significant amount of traffic in company's effort to fix the paid links and content farms problems.
In this regard, Google's Amit Singhal tells Wired that the new algorithm's effects are "widely positive," but says that "no algorithm is 100% accurate." He says Google won't manually change rankings for any site that was wrongly caught by the Farmer update, but the company is already working on "a new layer" to improve it.
"If you do over a large range of queries, you get a very good picture of whether the new results are better than the old," Singhal said.
"We deeply care about the people who are generating high-quality content sites, which are the key to a healthy web ecosystem," Singhal said. "However, we don't manually change anything along these lines."
"Therefore any time a good site gets a lower ranking or falsely gets caught by our algorithm -- and that does happen once in a while even though all of our testing shows this change was very accurate -- we make a note of it and go back the next day to work harder to bring it closer to 100 percent."
"That's exactly what we are going to do, and our engineers are working as we speak building a new layer on top of this algorithm to make it even more accurate than it is," Singhal said.