crgslst: the Superheros of Interface Design

crgslst allows you to search for items faster using craiglist's existing rss feeds to pull data from multiple cities. It is a huge timesaver, and it makes me wonder why the boys at Craigslist haven't atleast tried to make their interface more useful over the years. The superheros behind crgslst do not allow you to poll aggregate city searches to avoid burdening craigslist, which is the reason the previously wonderful listpic was shut down, if I have my story straight here.