[masswerk]

A 1) Still, as this were humans, there was a purpose and an agenda behind this, which was pretty much the give-away. Now it'll be just junk content superficially optimized for high approval rates. And the economic incentives provide a strong hint for this being soon the majority of any (written) content, there is, esp. on the Web.

[masswerk]

P.S.: Possible outcome: Publishing may shift (back) to forms, which involve higher costs, like print, in order to provide a suitable filter, both economical and in terms of an higher-order review (as provided by a publisher). The Web, lacking any of these filters, may actually follow the way of Usenet.