Am truly impressed with Zerodha's API initiative, making it way so simple, and low latency. Probably first of its kind in India, to my knowledge, making data through API so easily available. Moreover, forum is a great idea. I am sure, one day it would graduate to larger platform like stackoverflow and likes.
I am a novice, but stunned with ease of delivery. Surely it can open up doors to many, who may not be aware about it. If Excel ready code is provided by Zerodha, I guess it can surely get atleast few more lacs of customers. Finance people like me understand only Excel (not coding) and would find this very useful.