One user told IBTimes UK the move will take away one of the differentiating factors of LinkedIn Corp (NYSE:LNKD), and the main reason why it could sell itself as a professional rather than social network. Sneak peek: Yelp's new San Francisco HQ set to open (San Francisco Business Times) You can say this about the historic Pacific Telephone tower at 140 New Montgomery: they are going to love it on Yelp Inc (NYSE:YELP). With Novo Construction workers scrambling to prepare for the first of 700 Yelp workers set to move into the building over Labor Day weekend, Yelp CEO Jeremy Stoppelman Monday gave Mayor Ed Lee and his media entourage a hard hat tour of the new offices. The Yelp move-in will mark a milestone not only for the San Francisco-born internet company, but also for one of the city's most beloved buildings.