Task management service TaskRabbit is announcing a raise of $5 million in Series B this morning, in addition to its already existing 1.8 million in Series A. The financing was lead by Shasta Ventures and followed on by First Round Capital, Baseline Ventures, FLOODGATE, Collaborative Fund, 500 Startups and The Mesh author Lisa Gansky. In addition to the financing, Shasta Ventures' Sean Flynn will be joining TaskRabbit's Board of Directors. Formerly RunMyErrand.com, TaskRabbit is a two way marketplace that helps its community of over 1500 task runners connect with the the thousands of tasks posted on the site monthly. Task senders can sign up to the site for free and post a task which will be bid on by the runners, who are vetted through a three step background check. Senders can accept task bids and re-route payment through the site, scoring a runner on their performance once a task is complete. Founder Leah Busque tells me that the average task response time is 10 minutes, down from 30 minutes a year ago.