U.S. President Barack Obama’s latest Facebook update was well above the usual fare of Farmville alerts and motivational quotes. On a trip to Facebook’s head office for a town hall meeting last week, Obama declared America’s finances to be “unsustainable,” and took a few swipes at his Republican opponents. But Obama’s visit also highlighted his increasingly close ties to some businesses. This wasn’t Obama’s first Silicon Valley sojourn. He has visited the Googleplex and has appointed General Electrics CEO Jeffrey Immelt to head an economic advisory panel. And he’ll forever be associated with General Motors for the mega-bailout. Whether the ties are good for the companies or Obama is debatable. Outrage over GE’s low tax bill and indications Facebook may block some content in China haven’t made either very popular. But then again, polls say Obama’s popularity is tanking too, so it’s a two-way street.