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Nosh, a mobile app for iOS and Android that lets you post and read reviews and photos of individual dishes on the menus of restaurants, has released an updated version of its app that supports sharing photos of food with friends in private locations - like the food you cook at home. Craig Walker, CEO of the company that built Nosh (Firespotter Labs), previously co-founded the companies that became Yahoo Voice (Dialpad) and then Google Voice (GrandCentral). Walker says that private locations were among the top user requests when the app launched six weeks ago.

Food nerds are often even more proud of the food they make at home than what they find around town to eat - but most food photo and review services don't support home cooked food posted without a publicly visible location. Now Nosh users looking for nearby food won't see the enchiladas that came out of your oven and come knock on your door - but your friends on the network will see them in their stream of updates from contacts.

Restaurant review site UrbanSpoon is slowly moving into OpenTable's territory. About half a year ago, the company launched a very limited test of a basic reservations tracking system for restaurants in the Seattle area. At that time, however, restaurant owners could only use UrbanSpoon to tell their customers whether they had last-minute openings. Now, however, UrbanSpoon is launching RezBook, an iPad app and online reservations platform that will allow restaurants to bypass OpenTable and manage their tables and reservation books.

Urbanspoon is getting ready to take on OpenTable, the popular and publicly traded restaurant reservation service. Urbanspoon just started a pilot program with four restaurants in Seattle. Chances are that the company will then slowly expand this service to the rest of the 90+ markets it currently serves. Compared to OpenTable, Urbanspoon offers a fuller range of features for diners, though it is important to note that OpenTable currently offers more features for restaurant owners, even if they have to pay about $300 per month for a dedicated OpenTable terminal.

After publishing her book about social capital and the power of social networking,The Whuffie Factor, Tara Hunt is doing what any change agent does. She's changing. She's quit her job, purchased a winnebago and coerced five friends to karaoke across the country with her. Wuffaoke Or Bust is a cross-country road trip where six crooners and one pug will live stream their 13-city karaoke tour from San Francisco to Montreal. Think of it as a Rental Car Rally with a talent competition or Bullrun Rally with geeks instead of "petrolsexuals."