This spider's web of narrow tunnels, complete with coffin-sized cavities, opens out into dark subterranean churches - a most evocative way to end an underground tour of Rome.

BBC: Going underground at the Colosseum

The attorneys have paid to be listed, so while the Web site helps you narrow your search, you won't receive a comprehensive listing of all lawyers in your area and their specialties.

CNN: dotCOM Tools: Legal services online

The narrow sense is in being able to search almost all of the web from a desktop.

FORBES: Will Mobile Break Google's Search Monopoly?

However, for that kind of Web site-design task, you don't want a narrow focus, you want a broad focus.

WSJ: How to Stay Motivated: Daniel Pink on 'Drive'

But for web designers on the wide end of the spectrum and app designers on the narrow, getting your head around all of the moving pieces that have to be accounted for between discrete views can be challenging.

FORBES: Move up http://i.forbesimg.com t Move down