The Media Supermarket

One of our local radio stations is providing its listeners with the option of recording their voice for special song dedications. One of the listeners, actually speakers now, has turned this into a real offline Web 2.0 application.
Most of the people recording their dedications just do that, they say to whom they would like to dedicate this song, and how much they love that person, blah blah blah.
One of these people took this service to a really new level. She started recording certain messages to certain people. Talking to one of her friends, she would wish him a safe trip to his destination, and wish that he accomplishes the goal of that trip. To another friend of hers, she would apologize for the things that she said yesterday and ask for forgiveness. She would have two friends who are not really understanding of each other’s differences, and talk to both and try to find a compromise or a midway where they can communicate again together.
All this is done publicly, and all listeners would listen to this. It is becoming more like an interesting series of stories related to this one person, who they have never met, but started to know and identify with!
Next? She became a star! Other listeners who are familiar with her messages started recording their own messages just thanking her and complementing her on how great a job she is doing to get friends closer to each other!
One person decided to use the platform her own way, she used it for her own interest. She became famous, others start to complement her, and eventually new ways of using this recording service will be used by other people.
The radio station is only providing the context for people to record and publish their messages (and they get paid for each sound recording). The users are finding creative ways of using it, and since they are given the chance to publish their voice, they are doing the word-of-mouth advertising for the service since it makes them famous.
This is a really great example of how any application can be utilized in a context where the users can find ways to actively participate in the creation of content, and they will definitely do the marketing for that service or experience provided.