Just tried it. Congratulations on the launch. The post that it generated was quite contextual given the minimal set of keywords that it expects. I can definitely see a market for it.
I would love to see this integrated with social media platforms some day, just for the ease of publishing.
Also, when it says long/short/medium, can you put up the standard lengths around each of those as guideline so that a person knows what to expect before spending the token.
Couple of minor things around user signup.
1. The password validation error needs to be within context. I felt there was one generic error message for any validation issue.
2. You might want to purchase a domain matching the product and have emails sent from there. Mine ended up in spam and from a completely different domain