there is no set date for their twitcams. it's really random and they do it whenever they have time or are bored. they probably won't do one any time soon because they are on a break and are recording their album.
You can't.
YouTube
Unfortunately, they don't schedule them. I know, it's very sad :(. Usually, Liam is the one who does them, and when he does it just tweets about it when he is about to start; he never schedules them.
You can go to the URL of the twit-cam and watch without having Twitter. However, you won't be able to chat without a Twitter account.
6'1 (source : Lethal Bizzle sept 2012 twit)
you can see them on Twitter. But they do TwittCam when they want.
The members of One Direction commonly do Twit-cams which is like a Ustream. They can't see you but you can see them.
Mr. Twit plays mean tricks on Mrs. Twit, such as hiding a frog in her bed and convincing her that she is shrinking. He also puts worms in her spaghetti to make her think they are worms growing out of her.
worms
A twit is a person or somebody who is regarded as being contemptible.
No, the definition of a twit is an annoying person.
well a twit is an idiot, but perhaps you mean a tweet try that