On the go, you need to know whether the stuff you are looking for is available at stores nearby. Google has launched an in stock info system with data from five major retail outlets and are taking volunteers from businesses that want to join in the program.
As Google explains, just look for the blue dots. If you see a blue dot next to search results, tap on the adjacent “In stock nearby” link, and on the seller’s page the item will show as either “In Stock” or has “Limited Availability” near you. You can also see how far away the stores are from you if you’ve enabled My Location or manually specified your location. It works with any iPhone, Palm WebOS phone, or any Android-powered device in the US.