Unlike other European public transit systems, it stays open 24 hours a day, seven days a week.

BBC: Subway systems by the numbers

But if it stays open its impact will be considerable.

FORBES: Alex Bogusky, On The Next 510 Years In Advertising

If you log into a website and leave Safari, it stays open in the background (unless you explicitly close it or restart the iPhone) and maintains your sessions, but that's the extent of it.

ENGADGET: We've got iPhones, what do you want to know?

It also has some snazzy new features to make searching easier, and an extra window pane that stays open no matter where you surf to display, for example, e-mail, stock quotes and other information from your favored portal site.

CNN: FROM THE WEB