Stroll along the Mission's wide avenues and you'll be struck by the profusion of taquerias, pupuserias, produce markets, Salvadoran bakeries, salon de bellezas (beauty salons), auto-repair shops and check-cashing centers that post rates for wiring money to Guatemala and Nicaragua -- all evidence of the Central American and Mexican families that have been settling the Mission en masse since the 1950s. You'll also notice plenty of cafés, thrift shops and used-book stores that cater to the college grads, artists, activists and other alterna-types that until recently have been drawn to the Mission for its cheap rents. Note that "until recently," because with the Internet boom, even the Mission rents have shot up. Latinos and bohemians have been increasingly displaced by San Francisco's influx of highly paid young professionals, while trendy restaurants and boutiques have sprung up in what used to be the neighborhood's darkest corners.