The world is getting better, one peanut butter and jelly sandwich at a time. It's called the Peanut Butter Plan. Like many of the best plans, it's simple: Strangers get together, make peanut butter sandwiches and immediately pass them out to homeless people. No federal subsidy, no foundation, no vouchers. No official sanction from anybody. Just strangers, good will and peanut butter. Jory John, a San Francisco children's book writer, got the idea for the PBJ stealth campaign this spring. John put forth the idea on Facebook and, over the past few months, PBJ handouts have taken place in Los Angeles; Berkeley; Phoenix; Little Rock, Ark.; Grand Rapids, Mich.; Austin, Texas; and London. People are joining from all over the place," John said. "I thought it was about time to use a social networking site to do some good." The monthly gathering took place the other evening around a conference table inside a publishing house that had donated its office for the cause. Some sandwich-laden volunteers [went] to the Tenderloin and some others to the Haight and South of Market.There was no shortage of people who found the idea of a complimentary peanut-butter-and-jelly sandwich to be just the thing. Outside the BART station at 16th and Mission streets, a dozen folks accepted sandwiches. When the sandwiches were gone, [the] sandwich makers retired to a nearby tavern for a beer. The camaraderie of doing something nice, along with the beers, made everyone feel pretty good and some of the strangers exchanged phone numbers. "The smallest actions make the biggest difference," [John] said. "There are some cynics who say it's not really curing hunger, and it isn't curing hunger. But it's curing one person's hunger. There's nothing wrong with that."