Just wanted to know if there was a Google dance or so. 4 of the websites that I do SEO for has suffered drastically. All four of them have different geography however they belong to the same genre. There were some core keywords that were ranking in top 5 positions consistently for 4 consecutive months, this week which I find has been pushed down to the next page. Any reasons why this could happen. I also conducted a penalty check, & found that none of the websites were banned.