One quick fix would be to de-list the site in search engines. This way people coming here are from referrals or word-of-mouth only. Google shows about 160,000

One quick fix would be to de-list the site in search engines. This way people coming here are from referrals or word-of-mouth only. Google shows about 160,000 pages indexed for YC, I'm sure some of those are leading to new users.