Many have gathered in the hope of seeing Francis and Benedict appear together at a window to wave.

CNN: New pope, old pope meet for lunch

The website discloses the fees in several places, such as in the FAQ section and in the terms of agreement that appear in a pop-up window when someone registers.

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

Hover over any icon and a pop-up window will appear with more information.

BBC: Yellow sport icons indicate venues

Generally speaking, tPA is only effective and only given within a 4.5-hour time window after stroke symptoms appear, said Antoniello.

CNN: Stroke recovery: One woman's story

During the first month of driving my new Kia Optima Hybrid, my average miles per gallon did not appear to be more than a mile or two off per gallon off the estimated MPG displayed on the window sticker.

FORBES: EPA Slams Hyundai And Kia For Overestimating MPG

Several friends can join a room, and the live feeds from their webcams appear as separate blocks along the bottom of the window.

CNN: How Google+ compares to Facebook