Remember the good ol’ days when Google was accusing Bing of stealing their results, and Bing was accusing Google of click fraud, and whenever representatives from the two search giants were in a room together things got awkward? Well, it’s been all about good-natured ribbing between competitors lately.

This tends to occur at various conferences when search is discussed, and of course it’s no surprise that it would occur at a search-specific conference like SMX Advanced.

Google’s Matt Cutts spoke with Danny Sullivan in a keynote discussion at the event. Cutts famously does these 30 day challenges, in which he will commit 30 days of his time to doing specific things. Sullivan asked Cutts if he’d do something like “I’m gonna use Bing for 30 days.”

His response to this, according to a live blog from SMX sister site Search Engine Land, was:

I have not done that one, and I’m afraid to try! (huge laughter from audience – Matt then says he’s joking and compliments Bing team)

Another liveblogged account from Search Engine Roundtable says:

Danny: 30 day challenges are your thing, like I am going to use Bing for 30 days or so. Matt said, I try to do good habits (joking)

It’s all good though. Cutts and Bing’s Duane Forrester are tight: