I guess our "Algorithm to Rule Them All" is NIP-01.

And even that doesn't really do anything, unless you implement a bunch of others with a gazillion options and settings, so that the results can look totally different in the different implementations.

It starts all the way at the beginning:

Which relays should be included?

Do you have particular relays you want to use? Are you authorized to use them?

These are our relay suggestions for our users in Japan/England/Brazil or who like porn/anime/Biblestuff/knitting/spreadsheets/literature/animaltorture/baseball/baking/BDSM...

Are you more interested in things in your own language, or are you language-agnostic?

Should we translate for you?

Would you like to zap? With which wallet? How many sats should be the default? Public or private zaps?

Would you like to follow some hashtags or lists, or avoid some hashtags or lists?

Which kinds of events would you like to use?

Which kinds of notes would you like to see?

Would you like to include/exclude particular notes, based upon what a DVM or API-call returns? Which DVM or API?

Where do you want your images to be loaded?

Which emoji should be shown when you react to a note? Would you like a choice of emojis? Would you just like +/- signs?

Etc. Etc. Etc....