Tech world cools to President Obama

Mitt Romney has been mining Silicon Valley — a cash-rich part of the country that was turned off in 2008 by septuagenarian John McCain, who “never particularly felt the need to e-mail.”

The pro-Romney super PAC, Restore Our Future, has raised $1.76 million in Silicon Valley — including from venture capitalists like Marc Andreessen, the Netscape co-founder who gave $100,000 this year, an about-face from 2008 when he made a maximum contribution to Obama. In recent months, Andreessen has been critical of the president. The argument for Romney: He knows what it takes to make a company succeed, and he won’t hammer innovators with the taxation, regulation and prosecution that critics say Obama seems intent on pursuing if he wins a second term. Nothing personal, just business.