Clarifying steampunk

An unattributed post at Guardian:

1. "Take the steam-driven Industrial Revolution of the 18th century, pair it with the information revolution of the 20th and accessorise with the nihilistic political outlook of punk and youth culture, and the resulting outfit is steampunk."
2. "genre's best known and most imitated work, The Difference Engine... The Difference Engine charts an alternative Britain where Charles Babbage succeeded in his ambition to perfect a mechanical computer, leading to an all-powerful British empire based on steam-driven information technology."

I've never been sure if Arthur Clarke's "The Steam-powered Word Processor" qualifies?

[via Jeff VanderMeer]