Did you do anything illegal or unethical?
Advertising?
Hacks?
Assuming there are HN/YC'ers with million+ users.
Ask HN: How did you convert a million users to your service?
1–2 of 2 posts
Re: Ask HN: How did you convert a million users to your service?
#2One user at a time.
I haven't built anything solo with 1 million users, but I'm one of the 600,000+ people who helped build this:
...and it was done one user at a time, over a decade, nothing unethical, not much advertising beyond word of mouth. Lots of hacks, though!