But this doesn't explain why Issues are indexable on Google
What's the difference between a spammer creating their own repo and creating a bunch of issues with spam links vs their own repo and creating a bunch of wiki pages with spam links?
What's the difference between a spammer creating their own repo and creating a bunch of issues with spam links vs their own repo and creating a bunch of wiki pages with spam links?
That said, the wiki workflow, permissions, and limitations in formatting may push people who are after a more durable store of information to create a GitHub pages site which is then managed with the same workflow (forks, pull requests, and reviews) as code, along with the ability for search engines to index the GitHub pages site.