Let’s face it we all spend too much time on FaceBook. So, why not advertise there. FaceBook allows you to get very precise when targeting an audience, after all, they know everything about you.
Bing ads is the cheaper alternative to Google Adwords. Though not as big, it does provide many of the features of Google Adwords.
Google Adwords is the most used advertising platform in the world. There is a steep learning curve and your advertising budget is on the line. If you know the right tools you can track your customers through the funnel through purchase.