For you AirBnB'ers out there, AirBnB is hosting a Volunteer Day at the Potrero Hill Rec Center at
801 Arkansas St. on November 3, 2012 from 9:30 AM — 12:30 PM
Go to meetup page
They'll be serving breakfast and then it'll be on to renovate the landscape, planting, and removing weeds.
As with any dirt-related event, prepare for rain or shine, wear old clothes and bring some gloves
For more information, contact Chelsea Kemp, Community Manager, San Francisco