We have 2 sites in the same industry. Yesterday, one of the two plummeted in the SERP's, going from page 1 to page 6 and beyond on hundreds of terms. The other site has had no change. I don't see any update threads on the seo forums, so maybe it is just us. Anyone else see this? Our site is 7 years old and we've bought links for both sites. Although the site being affected right now has two different topics on the same domain. Should we make it just one subject and submit a re-inclusion?
I know, I am not going to do anything for a few days at least - but why would just our site get affected and not our competitors? Is there any algo activity going on right now?
I have checked that maybe there's a small Google ranking change per week, or more less time. and a more big change every two weeks. But as I have checked, ther's a biggest refresh every three months, or four months. But last year the ranking changes maybe everyday. This year the changing is more and more slower.
in the middle of september our site moved from second SER page to 21-25 page (with no reasons) only for the United States IP's... and only for two key phrases... and there is no any changes for three months... may be somebody have the same problem?