I recently hired someone to do some SEO for me. As soon as his social bookmarks where visible on google I noticed my traffic was dropping, dropping fast. Could this be coincidence or due to bad SEO? The traffic started dropping about 2 days after he started the social bookmarking. All the titles/descriptions are the same, told him to make it unique but he says it doesn't make a difference. What do you guys think? Coincidence or bad SEO?