Startup CFO for 9 years...Epinions (Director, Finance) sold to Shopping.com/eBay, Loyalty Lab (founding CFO) sold to Tibco, Badgeville, Offermatic, Socialize...
Jeff gives spot on advice and doesn't beat around the bush. If he likes the team and idea he makes priceless introductions and commits on the spot to investing. A great person to do business with.