Google Mapping Businesses that are open

Whatsopen.com has created a Google Maps Mashup of Businesses that are open. Its a Local Search + Hours of operation.

Let's say you are searching for coffee shops in a certain area, this mashup not only lists the coffee shop but also lets you know what coffee shops are currently open.

Here's a image showing my search of "Tandoori Chicken" near Mountain View, California. I searched at around 11.30 EST. Looks like all but one of the restaurants serving "Tandoori Chicken" have called it a day (indicated by red markers). This Mashup is still in Beta and currently works for California only. (via LifeHacker)