This is actually one place I think blockchain could make sense...
Use people's servers as a sort of botnet to process search results, the more you process the more you earn, you'd need maybe storage nodes for indexes, processing nodes for ai/ml categorization of results, and then maybe people can also earn coinage for ranking results they do get, and that way the shitty sites could be more likely filtered out.
To advertise, costs coins which allows advertisers to basically buy ads not from the SE itself but from users via a marketplace.
Use people's servers as a sort of botnet to process search results, the more you process the more you earn, you'd need maybe storage nodes for indexes, processing nodes for ai/ml categorization of results, and then maybe people can also earn coinage for ranking results they do get, and that way the shitty sites could be more likely filtered out.
To advertise, costs coins which allows advertisers to basically buy ads not from the SE itself but from users via a marketplace.