I'm currently working on a small project to learn some new skills. There's a really popular camping place in the Smokey Mountains that books out years in advance. Occasionally there are some last minute cancellations that they only announce on their twitter page.
I've built a tool that detects when they tweet about a cabin becoming available, then sends an email.
Originally, I considered this to be a product. Charge a small annual fee to get onto the mailing list.
Now I'm reconsidering... Maybe I should just give it away, build an email list with it, then sell something more valuable to that group later on?
Should I leverage this project to build an email list and capitalize on it later? Or should I go ahead and charge an annual fee to get on the list?
Note: this project has cost me nothing but time and the domain name.