Remember WhatsOpen.com, the stealth search startup that piqued Google cofounder Sergey Brin's interest last month? Brin was so intrigued he told the founders to keep the company hush-hush. Now, however, a source has leaked screenshots of WhatsOpen's secret project. The company has a Web application which shows users nearby stores and their operating hours -- "what's open." But I'm told by a source that WhatsOpen has also written the first wireless app for Google's new Android operating system. (You may know Android better as the software behind the still-mythical Googlephone.) Demo screenshots after the jump. Join discussion...