What are some alternatives?
When comparing macintosh.js and discoverlocal.fm, you can also consider the following products
Poolside FM - Experiment a radio made on Internet times.
Star Wars Intro Creator - Create your own Star Wars intro
Noted - Social music discovery
My 90's TV - TV from your childhood
vdNote - Share noteworthy moments from YouTube videos.
Nick Reboot - Nickelodeon shows from the 90's and 2000's