Ceefax: The early days
bbc.co.uk
bbc.co.uk
The headlines' noun-heavy wording also helped spawn the concept of "crash blossoms" — syntactically ambiguous headlines that had amusing alternate readings: http://www.crashblossoms.com/
Buying discounted airline flights and package tours through the TV; classified listings... all great precursors of online commerce, normalizing it ahead of the revolution that came with the web.
But the strength of Ceefax in particular, among these services was the written content. Well written articles on up to days news (often long before other sources), and sports (instant sports results - an amazing service in its time), which foreshadowed the great BBC website that eventually followed, probably teaching institutional skills that carried over.
Ceefax and the commercial teletext competitors represent another example of where solid government sponsored innovation can have big societal benefits and provide a roadmap for business to follow.
> MODE 7
> PRINT CHR$(136);"GOODBYE CEEFAX!"