Here are the pros and cons of GrooveShark and Spotify. On a free Spotify account (USA) you are limited to only 10 hours a month and feature advertisements (banner & audio). Free accounts are invite
Link to a specific point in a track so you can have your friend listen to your favorite part
Similar to Youtube, you can link to a specific point in a track. Right-click the track name and hit "Copy
If you’d like to delete your account, just contact Customer Support through the contact form. You can also send an email to firstname.lastname@example.org and provide them with your username, date of birth
Here are some great apps for when want to just stream music, and not worry about MP3's filling up your devices storage.
Spotify has long been one of the most popular streaming