I repeat this thread because I put it first on a wrong topic. Almost a week ago, the number of visitors from search engines was decreased by 5 times. Meanwhile, I found some code html errors on almost every page and Google webmaster tool found 40 links that are missing. I resolved these problems. The missing links appeared over night and I think from them was the problem. The questions are : Were these errors the real problem or is something else? When should I expect things to return?