99% of faucet, don't have content, is every time the same page, with faucet and a fast explanation to story of bitcoin.
i continue see more new faucet born with adsense
I think this is the key point. See Adsense's Webmaster quality guidelines
- Make sure your site adds value. Publishers are not allowed to create multiple pages, sub-domains, or domains with substantially duplicate content.
- Publishers must provide unique and relevant content that gives users a reason to visit their site first.
- Avoid "doorway" pages created just for search engines, or other "cookie cutter" approaches such as affiliate programs with little or no original content.
I think most, if not all faucets would fail the criteria above under close scrutiny.