Polls are very useful when it comes to getting a great amount of Targeted Traffic to your site. Getting this particular Traffic is as simple as you asking questions that effect most or all people. There are many sites that offer a free poll service. However, it's very important to choose one with high rankings which allow you to include your website so people can see it when they answer your questions. And when they type your question in the search engines it will show your question, due to it being provided by a poll service that has high rankings. A good example is "Which Doctor Do You Prefer?"