It says in the article that the author gets 34k daily users, and 50k unique users/month. It would have been clearer if the author had talked about sessions (which are therefore > 1M/mo) for sure, but you're still making a very big (and invalid) assumption.
EDIT: Please disregard the above. I need an eye test, or maybe just to put my glasses on! Daily users are 3.4k (3400), not 34k. My apologies, I take it all back!