This one.

>Name one social media site and then explain how it was a net positive for society/outweighed all of it's toxic aspects.

That isn't something one can objectively measure.

I have my own subjective opinions about social media, as does OP. OP suggested I inject positivity into mine, so I am curious to see what their subjective opinions are in an effort to perhaps shift my perspective.

i think that's asking the wrong question. i think most or all of them started off pretty good. where we went wrong is creating a system where social media sites are paid for with ads, which gives warped incentives to the owners of those sites.

in that respect, federation is the answer. take the power away from anybody who could screw it all up for us.

MySpace.

No dark-cryptic algorithms, promoted creativity in coding, design and music. You knew the people you added. Made socialising easier.

Guilty of mainstreaming social media as an idea /s