Related Clues:

• Construction ___
• Short address
• Navigation aid
• Setting
• www.yahoo.com, e.g.
• Internet area
• Address bar reading
• Surfer's entry, for short
• It often starts with 'http'
•     www bookmark
• It may start 'http://'
• Its common extensions are the theme of this puzzle
• Webmaster's work
• Where it's happening
• Net address