Jacob Perkins, author of Python Text Processing with NLTK 2.0 Cookbook, and creator of Python NLTK Demos and APIs, recounts in this post how he got started in building APIs, and before his discovery of Mashape:
I wasn’t sure if anyone would actually use the API, but I knew the best way to find out was to just put it out there. So I did, initially making it completely open, with a rate limit of 1000 calls per day per IP address. I figured at the very least, I might get some PHP or Ruby users that wanted the power of NLTK without having to interface with Python. Within a month, people were regularly exceeding that limit, and I quietly increased it to 5000 calls/day, while I started searching for the simplest way to monetize the API
It is a good read with with a bit of Mashape history thrown in as well If you’re a developer looking for monetization options for your API, Jacob’s story might just be the example you’re looking for. So check it out.
You can check out the Text-Processing API here.