WTF--why raise a meager $5m if you sold for $350m

Google Reader (1000+): "Brighter is part of a new class DIY healthcare startups just now beginning to emerge. These work outside the traditional health insurance industry. “Our mission is to provide affordable dental care to people without dental insurance,” says Winebaum, who is best known for starting Business.com in 1999 and eventually selling it for $350 million. He founded Brighter last year, and raised $5 million from Mayfield in January."

I know he did not get all $350m but why get investors up your ass? I would do anything but (pun intended).