In the US, Craig's List doesn't have a copyright claim on the data or the aggregation of data (known as a database right; a separate copyright assignable for th

In the US, Craig's List doesn't have a copyright claim on the data or the aggregation of data (known as a database right; a separate copyright assignable for the compilation of data, see http://en.wikipedia.org/wiki/Database_right http://en.wikipedia.org/wiki/Database_right and http://en.wikipedia.org/wiki/Sweat_of_the_brow http://en.wikipedia.org/wiki/Sweat_of_the_brow). In the UK and EU, database rights do exist, although Padmapper could argue that Craig's List makes no investment in actually compiling the database since listings are user submitted (as opposed to the investment they continually make keeping the database accessible).