"We had to spend two months writing the whole billing system up; Chargify and those services didn’t exist at that point. So, if we wanted to have recurrent billing we had to write it ourselves and do all the logic"<p>If you implement a new service out of necessity to solve a problem you have at work, it is a very good indication that service is also needed by other companies. Instead of using this service you created internally only, you should release it and see if there is a great demand for it.<p>I think this was a missed opportunity for Wufoo to create another great service.