Part two of The Webby Debates, hosted on CNNMoney.com and moderated by that site’s Laurie Segall, featured TechCrunch columnist Paul Carr — who quit Facebook and Twitter in August — discussing the future of social media with Wine Library TV host Gary Vaynerchuk.

At one point in the conversation, they debated how easy or difficult it is to refute a lie once it is shared via social media and blogs, leading to this exchange (video below):

Carr: No, it becomes Obama says that the trip to India didn’t cost $200 million, but …

Vaynerchuk: Well, why do lies … come on.

Carr: … but all these people do say. It’s opinion.

Vaynerchuk: Hold on a minute. If there’s too much noise, why can a lie itself not have … get more attention than the rebuttal itself?

Carr: Because if a lie is seductive enough, and the lie is sordid enough, then that’s much more interesting than someone saying …

Vaynerchuk: I promise you if someone tries to smear the shit out of me that I will fully use social 24, 7, 365, to rebuttal, and it will work.

Carr: But people trust you. People come to it with an idea of what Gary Vaynerchuk is.

Vaynerchuk: They trust me because I … and by the way …

Carr: If you become known as the guy who was accused of a crime on Twitter, and that’s all people know of you, good luck rebutting it, because you’re that guy.