Coupe Cafe, 538 Ramona St. Cost of a cup of coffee? Doesn't matter. This is the king of Palo Alto's free Wi-Fi spots. Grab one of the precious tables by an outlet and camp out for an afternoon. The Web-celeb spotting alone makes it well worth it. Seen there recently: James Hong of HotorNot, Om Malik of GigaOm, and Justin Rosenstein, Facebook engineer evangelist, moments before his career-changing interview with Mark Zuckerberg. Stealth startups lacking office space often use a table at Coupa to demo their plans to investors, like Mint’s Aaron Patzer did a few months ago.