I am always on the lookout for good streaming music which is why Skooday intrigued me when I saw Bla1ze @CrackBerry mention them. Exfm essentially offers you a way to find free music online and share it. You can listen to hand picked music from the Exfm team in each genre which make it easy to find up and coming artists. You can check out what I mean at http://ex.fm/.
Sandbox.it jumped in a created a BlackBerry 10 client for Exfm, called Skooday, for both the Z10 and Q10 and it works quite nicely. Best of all it is free though hopefully more features are coming. Check out Skooday free in BlackBerry World. You can find a demo video of the app in action below: