I do not agree that formal writing has expired, but it is less popular than it used to be. The alternative is informal writing. Informal writing works perfectly well, if you know what you are doing.
As of this writing (2-25-11), rumors of Roger Smith's demise are highly exaggerated.
The word demise is a noun. A demise is an end or a death.
Your Demise was created in 2003.
The demise of something or someone is their end or death. ...the demise of the reform movement. Smoking, rather than genetics, was the cause of his early demise.
His poor language skills lead to his demise! :-)
Foreshadowing Our Demise was created in 2001.
Spy's Demise happened in 1983.
Spy's Demise was created in 1983.
World Demise was created in 1993.
California Demise was created in 1992.
Soul Demise was created in 1993.
Demise means a person's death or a transfer of property by demising. Ecosystems can become out of balance with the demise of large animals.