If you must write help documentation, ensure it is needed. And actually helpful.

There are some serious coffee drinkers in the UsabilityOne office, and a number of us are fairly fussy about our coffees too. So when our new coffee machine arrived we were keen to fiddle with the settings and configure it just the way we like it.

Several weeks later, we still haven’t worked out how to do that. We do know how to change the language on the menu though.

When designing an interface, design for the most likely and frequent activities your users will undertake.