@drahardja @AdeptVeritatis This was my question. There will be a global search provider. It will be either an existing, ad-funded one which will not only index the toots, but use your search interests to build a profile, too, a new ad-funded one which will do the same, but compete against the old one(s), or one (/several) which funds their operations from some other source of revenues.
Sounds like you prefer the former.