Hey, I have been doing blog comments with scrapebox to 600 high quality blogs once a week and at the beginning of the month one of my sites stopped ranking for its main keyword. It is ranking for other keywords but it quit ranking for the main keyword. It was previously on the first page for a month. It just happened to another one of my sites as well. Has it been dancing all this time? The only ranking i get for the main keyword is a post page for a long tail word on age 10. This happening to anyone else? Thanks.