Came across this listing in craigslist and it motivated me to register and post:

I was perusing the free section of Craigslist for my area and found someone giving away 170 - 275 gallon IBC units.

http://sfbay.craigslist.org/eby/zip/3661186524.html

FREE. 275 Gallon Storage Containers; previously contained vegetable oil. 170 units must be removed no later than March 8th. Port of Oakland. No loading help available.
530 Water Street

I dunno about the previous use for veggy oil but I am so a recycling geek that I'd hate to see these go to waste.

good luck...