Twitter is undoubtedly a hugely popular social network. One of the keys to its success is its simple and powerful API, which opens the doors to countless novel ways for you to use the service.
One of these uses is allowing your visitors to “pay with a tweet”. Namely you take something that you would otherwise offer for free (like an ebook, mp3 or other kind of digital media), and make it available to users only after they tweet about your website. It is a great way to promote your products and get noticed, and it doesn’t cost anything to your visitors…
