Some social networks on Web3.0 that you can explore for their CPM rates:

Minds - A decentralized social network that rewards content creators with tokens based on the engagement their content receives.

Steemit - A blockchain-based social media platform that allows users to earn cryptocurrency by creating content and engaging with the community.

LBRY - A content-sharing platform that allows creators to publish their content, sell it, or monetize it through cryptocurrency tokens.

Sapien - A community-driven social network that rewards users for creating and curating quality content.

Peepeth - A decentralized social network that rewards users for quality content and positive interactions.

Nodle Cash - A blockchain-powered social network that rewards users for sharing their unused mobile data.

Gab - A free-speech social network that allows users to earn cryptocurrency by contributing to the platform.

Note that the CPM rates for these platforms may vary based on several factors, including audience demographics, ad targeting, and content quality.

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