What are some alternatives?
When comparing ridetheclown.com Saver2 and Last.fm, you can also consider the following products
Pithos - pithos is a daemon which provides an S3-compatible frontend for storing files in a Cassandra cluster.
Serendipity by Spotify - Map shows when two people play same song at same time
Elpis - Elpis is a free and open source Pandora client for Microsoft Windows.
Pandora - Pandora Radio is a free (ad-supported) internet radio founded in 2000.
Hermes - Pandora Client for OS X
Google Play Music - Free radio for everything you do. Store 50,000 tracks from your personal collection. Subscribe for on-demand access to 40 million songs and offline listening.