Earning Points. Starwood's Preferred Guest program is fairly straightforward: the more nights you spend at participating hotels, the faster you'll earn a free night.
The mapper output (intermediate data) is stored on the Local file system (NOT HDFS) of each individual mapper nodes. This is typically a temporary directory location which can be setup in config by the hadoop administrator. The intermediate data is cleaned up after the Hadoop Job completes.
Now that the majority of audio interfaces have ASIO drivers, Microsoft's Sound Mapper device is almost completely redundant. However, in some cases it can be useful. For example, if you need to play old multimedia files, Sound Mapper can be used, as it can play back files with sample rates as low as 6kHz.