Ev Williams was quoted recently saying, “The world is big enough for both Facebook and Twitter”, almost as though we were supposed to think Twitter wasn’t trying to be a competitor.  Don’t be fooled though, Twitter’s recent lists feature is just one step towards providing the privacy controls Facebook itself is known for.  Before we know it you will be able to decide which lists you want to share Tweets with, photo services will be integrated, video, groups, messaging, and more, and Twitter will be head-to-head with the features Facebook currently provides.  Twitter wants to go head-to-head with Facebook.  There’s no doubt in my mind that’s what Twitter is trying to do – it’s what they have to do in order to continue growing.  While Facebook’s weakness is the lack of full openness, Twitter has the greater weakness of lack of control or privacy.  Without more than just public status updates their sign ups and traffic will plateau and the service will dwindle and lose value.

Yet, with each update to Twitter comes increased pressure to Facebook to become more ope