Earthify takes a page of Craigslist posts and maps them on Google Earth. It has been tested with both search result pages and browse pages in several categories. The results are divided into "Earthifyable Listings" and "Un-Earthifyable Listings", the un-earthifyable ones being those that could not be located using the Google Geocode API based on the location provided by the user. In my tests, the listings are Earthifyable more often than not, but it really depends on how much information is in the posting.

I'd like to EMPHASIZE that Earthify uses Google Earth, which is Google's 3D gegraphical browser. It really is a great program, so if you don't have it, I suggest that you get it here.

Although Craigslist does have RSS feeds, these feeds only contain 14 listings, as opposed to the 100 listings that you get on a typical result page. Therefore, to get the listings, I scrape the page rather than parsing the RSS. Because of this, Earthify is somewhat vulnerable to changes on Craigslist, so if you encounter problems while using the script, please let me know.

Source (www.earthify.org)

---