Padmapper's isn't "reposting" any given listing -- it displays an abbreviated digest of the listing in its search results, and then if the user clicks, it takes them to the original listing.
If this is illegal or otherwise objectionable without an explicit agreement from each Craigslist poster, I'm not really sure how a search engine or even descriptive hyperlinking is kosher without explicit agreement from each website indexed or referred to.
If this is illegal or otherwise objectionable without an explicit agreement from each Craigslist poster, I'm not really sure how a search engine or even descriptive hyperlinking is kosher without explicit agreement from each website indexed or referred to.