Usability

Generic term – design features enable=ing something to be user-friendly.
Measure of quality of user experience with product or system such as:

• website
• mobile device
• software application

Usability problem WRT WWW:

• Millions of users with different skills, knowledge, experience and expectations
• International & multicultural make-up of users & websites
• Billions of websites
• Tens of thousands of page designers & authors with different backgrounds, abilities & skills

No international standard = almost every page is different.
Poor designer education = no common techniques to follow.
Tools such as Frontpage easily used & misused.
Language, ability & culture contribute to different experience of same page.