SEM

Search Engine Marketing is all about outrunning the other guy

The difference between making money with SEM/PPC campaigns, and throwing money into a bottomless pit is how you execute the final 10%. When you outsource this to you should especially mind full about this. When you invest in Pay-Per-Click Advertising, on Google (Adwords), Bing or Social media like Facebook, Twitter, and LinkedIn, it's not about doing everything right. It's about doing everything a bit better than your competition.