> The secret is multiple accounts.

There was a "show hn" many months ago that did stylometry on HN commenters to show which accounts were most stylistically similar; I ran a throwaway account of mine through it, and it showed my account in the top 3 - which was impressive.

Having multiple accounts won't save you when your own word choice, grammar and style can uniquely identify you to anyone sufficiently motivated to link your disparate identities at any point in the future. The author even said their tool was rather basic; IIRC the basis was all pairs similarity on n-grams