With the implementation of Google Panda, Penguin and Hummingbird, most webmasters have been struggling to reclaim their position in search engine result pages. Some keywords where they rank higher were dropped but it is to penalize them instead, it is the result of the changes in algorithm that determines your SERP ranking click here for official website.
Link building service is a tried and tested tool to have your blogs or sites get noticed and increase its website rankings. There are many different link building tools to choose from. Some are free while others require a small fee. There are even companies that offer link building services in different rates. When hiring link builders, it is crucial to do a background check and review the available options. It will greatly help if you can study the portfolios of the company or individual offering the seo service. Their portfolios will give you an idea about their previous work and the link building tools they used to create traffic and build backlinks for their clients. Keep in mind, that they are not created equally so you must carefully choose whom to trust.