I have not explained the criteria by replaying to the post directly, not wanting to harm faucet's reputation.
The criteria for faucets are:
1. Easy to find claim button.
2. Captcha and claim button must work properly.
3. Maximum 1 "Pop-up ad" or 1 "Skip ad" per session.
4. No messages "Insufficient funds" or "Limit reached".
5. Allow members from all countries.
6. Reasonable Rewards.
7. No nudity, pornography, profanity etc.
8. No links to viruses, phishing or any sort of malicious software.