IFTTT’s sole intention is to automate the Internet and create connections between commonly used websites. Actions performed on one website can trigger actions on another website for you, making it effortless to share content and perform actions (as the Internet should be).
imo.im is an amazing browser client that allows you to talk with friends on nearly any instant-messaging network (Skype, Facebook, MSN, Steam, etc.). If you use more than one instant messaging account, or just want a great interface, check it out!
Raditaz is an awesome radio service that uses MediaNet’s huge library of 13 million songs and allows you to create and edit your own radio (highly customization and filterable) or listen to premade stations.
Vibin.fm is basically Pandora for electronic music, and it does great with that focus. There’s several areas within the electronic genre to choose from (including dance, dubstep, mashups, remixes, etc.) and you can even filter by length of songs, very cool.