It sounds like you want CL to specialize in a niche, which is something they're not really setup to do, nor is it their claim to fame. They are a firehouse of classifieds information, that's why a lot of people like them.
They could mine the data they have a bit more, but where do they stop? Should they let you select computers for sale by CPU type(newegg)? Cars by model/make/warrant/color(autotrader.com)? Dates by body measurements/race/religion/compatibility questions(okcupid.com)? Should their forums have a karma system(hacker news)? There is a reason they are called "Craig's List" & not "Craig's Apartments", "Craig's Cars", "Craig's Dating" or "Craig's Computers".
Perhaps they should try harder on the spam, but redesigning how they operate could alienate a considerable portion of their community who like the simplicity & popularity of the site.
They could mine the data they have a bit more, but where do they stop? Should they let you select computers for sale by CPU type(newegg)? Cars by model/make/warrant/color(autotrader.com)? Dates by body measurements/race/religion/compatibility questions(okcupid.com)? Should their forums have a karma system(hacker news)? There is a reason they are called "Craig's List" & not "Craig's Apartments", "Craig's Cars", "Craig's Dating" or "Craig's Computers".
Perhaps they should try harder on the spam, but redesigning how they operate could alienate a considerable portion of their community who like the simplicity & popularity of the site.