Hi Brad. After letting users post for free during beta testing, we decided to charge one DreamCoin per submission to filter out spam and hopefully to improve the quality of the content.

After you join, you may view dreams that have a value of zero for free. You also start with one DreamCoin, so you can submit one dream for free essentially. If people like it, you'll accumulate coins that can be used to view other entries. DreamCoins are also given to users as a gift at random times, so that's another way to do it.