Scrolling twitter tweets on your tv screen is a feature of the FireText software. It's primarily used by television stations and events where audience interaction takes place.
Twitter is a free social network that allows users to keep in touch with each other using @screennames and #interesttags.
It's by the same way that your audience can send twitter messages on your tv screens. FireText can listen to specific #interest tags, and when a twitter user includes that interest tag within their tweet, that tweet is processed by the FireText software.
FireText receives the tweet, customizes the fonts and colours to match your unique brand, then scrolls the twitter message over a unique graphic, which is outputted to your tv screen.
You can scroll tweets on your tv, you can scroll tweets on your projectors, scroll twitter tweets in your arena jumbotron. The places you can scroll twitter is endless, because the FireText software sends twitter messages out via stand video output on your laptop. That video output can be connected to any type of video source.
So that's how your scroll twitter messages on your tv screens. Questions, take a look at FireText.com