Image by bfishadow via FlickrHit Bandit is holding a promotional drive, so up to (and including) December 15th, you can get paid $1 for every new referral you bring in.
Also, the initial bonus has gone up to 50 credits (was 30), and the minimum surf to fully activate a new account has been raised to 50 (was 40). The referrer gets the $1 bonus plus 25 credits once the new account is fully active.
Random referrals do not earn bonuses. Cheaters will get their account(s) banned.