So we noticed this odd "Contoso" label on Microsoft's Windows Phone Marketplace press image earlier today, and we finally got to the bottom of it: Microsoft's Todd Biggs says it's a placeholder entry for a carrier-branded section of the store -- instead of having a separate portal and / or store, Verizon or AT&T or whoever can simply sell their content to customers directly through Marketplace. So why Contoso? Todd says it's a random trademark owned by Microsoft used in place of carrier names that doesn't actually mean anything, although we think it suggests adventure, white roadsters, and finely-groomed mustachios. And now you know.