Art critics, in one sense, play a role in the art world not unlike the role played by transistors in the electronic world. Transistors amplify signals. Critics are kind of like this, as viewed from the perspective of broke-ass artists.
An ironic New York statue might well now stand as an adequate symbol for Weiner's situation over the last week: A larger-than-life, scantily clad male public figure, trying to keep down the images of vice represented by multiple women.
Traditional journalists and art critics tend to dismiss Saltz's move to social networking as an expression of self-indulgent megalomania. I think they exaggerate the downside and miss the upside of the new media's effect on art discourse.