What are some alternatives?
When comparing Slaps and Noted, you can also consider the following products
SameTunes - Music social network to compare, share, and discover music.
Cymbal - Music discovery powered by friends
BeatStars - BeatStars is a social music marketplace & distribution co.
OurMix - Music discovery powered by your friends
trending.fm - social music
Kumo - See what your friends are listening to on SoundCloud