Where do data scientist hang out online?

There are few places that I can think of where data scientist hang out online:

1. Social media: Twitter, Youtube

2. Q&A: Quora, Reddit (DS threads), Stats.StackExchange

3. Competition sites: Kaggle, Analytics Vidhya

4. Blogs: KDNuggets, DataTau

5. MOOC’s: Coursera, Udacity, Springboard, edx, datacamp

VIEW QUESTION ON QUORA