Short version: Some douchebag casting director tweeted the results of her casting session, complaining about specific (though un-named) performances.
She claims she's being helpful, giving advice, but it seems to me that she could always just write an article or blog post or something constructive for future auditioners. The internet does allow you to post more than 140 words at a time. She knows that, right?
And if she really had a problem with something a specific performer does, why not address it to that specific person? That's a really passive-aggressive way to deal with your frustration.
I hope the next time Ms. Eisenberg does something private or personal that someone tweets every detail.
This is the exact kind of deafness to personal interaction that characterizes Rupert Pupkin's character in "King of Comedy", that makes you want to retch when he actually becomes a success. But in the defense of that character, the movie does point out a severely messed-up and disappointing life that made him that way. What's a successful, powerful casting director's defense?