Maybe I talk too much on HN. :)
When I ran it, it gave me 20 random users, but when I do the analyze, it says my most common words are [they because then that but their the was them had], which is basically just the most common English words.
Probably would be good to exclude those most common words.
I had a similar result. 85%+ similar to a bunch of random accounts, and my perhaps most distinguishing feature is I don't use the word 'app' or 'company' a lot. The former because I dislike the word, and the latter maybe because I'm self-employed.
I figured it maybe would cluster me with other non-native speakers but it doesn't appear to. Of all the accounts where I could identify a country of origin, all were American.
Funnily enough, my top 10 words used less often are as follows:
you, are, have, they, at, an, we, if, do, to
I'm frankly not quite sure how I've avoided them given how common they are.