[russellendicott]

I agree with all of your points but why is it Twitter or Facebook's responsibility to check all of those things for every article posted to their platform? Why is the onus not on you as the reader to do your own fact checking?

[takeda]

Because the timing of this piece (if you look at the PDF was created a year ago, but published just in middle of October). It is clear that it is timed to affect election results.

They are not responsible, to check all things. But it's mostly ethics and self preservation. I don't think anyone will deny that they actually have real impact now (even greater than MSM now) and I believe if Democrats win, there will be some laws passed adding some checks. I also believe trump with executive order about section 230 also probably contributed.