(Written by guest contributor Andrew Albritton) Search engine marketing (SEM), sometimes referred to as paid search, is the practice of bidding on keyword strings to increase a website's visibility on the search engine results pages (SERPs). For Internet marketers SEM can be a highly effective means for promoting and driving traffic to a website or sales page. In fact, when optimized and managed effectively, a well-performing SEM campaign is one of the most sought-after and... Continue Reading