RK wrote today to say, "You should ...have a look at these sites...: http://www.letsolla.com , http://www.timebanks.org/how-it-works.htm , http://hyperlocavore.com/ , http://www.zwaggle.com , http://www.u-exchange.com , http://www.swaptree.com , http://www.tradeafavor.com , http://sharetompkins.wordpress.com , http://www.flexicar.com.au , http://www.goget.com.au , http://www.orix-carsharing.com.