Backfence.com has officially launched in Washington. On first pass, the design is interesting: it’s very 37 Signals style, bold colours and uncluttered page layout. Very nice. As others have pointed out, the self-service advertising model is another feature. There are three types of advertising: display (with a cool “build your own” system), classified (free to individuals, with upsells, and paid-for for businesses) and yellow pages (again, free for local businesses, with upsells).