Not a Tweetathon as such, but if you want to challenge her to take responsibility for her comments, then take a moment to do this:
Reply to her tweet: http://tinyurl.com/gdctweet
And include a link to this page: http://urli.st/2mD
I'm inviting other parts of the community to do the same. Let her know that she has her clients' customers to answer to when she drops a grenade like this, until she confirms how seriously she intended it.