Some users of Google might be wondering about the meaning of the black ribbon, which is displayed on Google's homepage today.
The use of black ribbon has been made by Google in the past also. Usually, black ribbon is used on Facebook and Google to point out for something catastrophic or as a sign of grief.
Today, the black ribbon meaning on Google homepage is also to signify support efforts for relief of the sufferers of Hurricane Katrina, which struck New Orleans five years ago.
Previously, black ribbon has also been used to commemorate the London bombings to show respect for the lost lives and sadness for the incident.
Some users of Google have already started discussions related to the black ribbon meaning on Google's homepage. However, if you rollover your mouse over the black ribbon on the Google homepage, you will get answer of your confusion by a pop-up text stating, "Hurricane Katrina".