pay-with-a-tweet

Checking twitter today I saw this

This Book helps you to move into the Digital era of awesomeness. Download it for free: http://bit.ly/4R9rth

Then I clicked the link and went to the site to download the book, but, for my surprise, they ask me to pay the download with a tweet. What? Yes, pay with a tweet!

www.paywithatweet.com is a service where you can release products for free (a video, ebook, mp3 file, WordPress theme…) but asking people to write something in twitter before getting the prize. You can configure the promotional message and when the user wants the content he or she is connected with the twitter API and the text is automatically posted into his account.

Users can decide if they want to pay with a tweet on Twitter or with a post on their Facebook wall.