Have you ever tried to post a note on a free bulletin board at your local grocery store? If you haven't, you might want to try it. A lot of people are looking at them every single day, and it's usually completely free to post them.

But, there is one problem though.

Usually, there can be close to a hundred notes on a bulletin board, some of them selling used bikes, some selling Playstation or Xbox, some asking to rent an apartment, and some would like to announce a concert at the local church. There are all sorts of notes, and all sorts of people reading them.