Entrepreneur and investor Marc Andreessen of Los Altos, Calif., gave $100,000 to the pro-Romney Restore Our Future Super PAC, which has received $43.6 million so far. Andreessen is the co-founder of the Andreessen Horowitz venture capital firm, which has raised a total of $2.7 billion since its founding in 2009. Andreessen is probably best known as the co-founder of Netscape; he subsequently formed Loudcloud and Ning. Last year, Andreessen gave $30,800 to the National Republican Senatorial Committee and also contributed to Sen. Orrin Hatch's campaign. To put his Restore Our Future donation in perspective: it's dwarfed by contributions from hedge fund manager John Paulson ($1 million); Houston homebuilder Bob Perry (nearly $4 million); retired hedge fund manager Julian Robertson ($1.25 million); and others.