Craigslist can be very helpful when it comes to business promotions. It is a classified advertisement website. With 20 billion page views a month, it’s a cheap, easy and effective way to build your business. Here you can sell, get gigs, and respond to proposals. Any craigslist search and be turned into an RSS feed by clicking the orange RSS button. This button is located at the bottom right of you search result. There are also apps such as Craigslist Mobile and Craignotifica which gives you instant updates straight to your cell phone.