How do craigslist mashups get data?
I'm doing some research work into content aggregators, and I'm curious how some of the current craigslist aggregators get data into their mashups.

For example, www.housingmaps.com and the now closed www.chicagocrime.org

If there is a URL that can be used for reference, that would be perfect!
How do craigslist mashups get data?
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I'm doing some research work into content aggregators, and I'm curious how some of the current craigslist aggregators get data into their mashups.

For example, www.housingmaps.com and the now closed www.chicagocrime.org

If there is a URL that can be used for reference, that would be perfect!