Comment Re:Long-term solution: (Score 2) 23
Or just require logins, and require a modest microtransaction of $1 to create a login, or explicit administrator approval. Longtime actual users and contributors will be exempt through the administrator provision, and bots are free to create $1 accounts (which are bannable for abuse) thus funding the project. New actual users probably woud not be bothered if the rationale is explained.
If it's really worth it for them to crawl endless random URLs until the sun burns out its fuel, make them pay for the privilege.