For all the complex websites out there, it always seems like the simplest ideas are the ones that breakthrough. Smart, easy ideas that allow users to engage with a site in an easy way.
PostSecret is a blog with a simple purpose - to allow people to anonymously post homemade postcards with a secret on them. By simply scrolling through the blog, you can see hundreds of examples.
Since it's inception, the blog has over 100 million hits and the author Frank Warren, has published four books using the images from his blog.
What does it take to do something like this? A smart, simple idea and a forum to start the conversation.