Hi I have few sites for my business and I have many competitors. I figure out one of them is trying to hurt my websites. When my post appears in 1st page of google he somehow deindexed my post to kick me out from the search engine. I don't know how he do that? All my posts are unique and everything I use in my post is unique. Please help me and give me a solution. How he do it? How can I prevent that and what should my action to repay him. Thanks in advance.