tim morse: i have no idea. what companies try to do is work on these things.ou announce something definitive at the same time someone is leaving. but i have no idea. emily: let's not forget that jack dorsey is running another multibillion-dollar company called square. he has another job. though he has been very involved on the board. they don't say what they are doing in terms of looking for a new ceo. what do you make of that? george zachary: they will have to declare that. to me the fact they are not saying it means they are considering jack as the ceo or someone else within the company that they don't want to name. or they are not willing to name who the search provider is right now. emily: who do you think should be ceo of twitter? george zachary: usually the best companies are the companies that preserve the founders. the founders carry the spirit of the company. once you lose the founders of the company, you lose the spiritual backbone of the company. emily: there has been a clear divide between evan williams' vision of the future, and jack dorsey. hasn'

emily: tim morse, a guy who is been in jack's position.will continue this conversation after a quick break. we are talking about a dramatic shakeup at twitter. dick costolo, the ceo, is out. ♪ emily: we're back to our breaking news. dick costolo stepping down as ceo twitter. jack dorsey stepping in as interim ceo. we have an early investor twitter, and also a former yahoo! cfo, and adjoining lascivious type -- and when this kjjoining us via skype. who can be the new ceo of twitter? who do you think can do this job better than dick costolo, considering jack dorsey as well? >> i don't have an individual yet in mind but i do think when you start looking at what you want to do to replace this job, i think it needs to be someone that comes from media. i think the media business has learned a tremendous amount about ease-of-use, engaging users, and i think that is a big angle about what twitter needs to come push. i think that as media has evolved, that is where they are going to look. when you start seeing the next chapter for the company. i th