172 Owen Thomas 07/30/07 05:07PM Filed to: hires hires heavy jibjab larry kramer Marketwatch Polaris Venture Partners Venture Capital Valleywag Larry Kramer, founder of the MarketWatch stock-news site now owned by Dow Jones, has joined Polaris Venture Partners as a senior advisor. The firm's portfolio includes online-media companies like JibJab and Heavy. [LinkedIn]
