Hey, if you like discovery try Audiogalaxy Mixes - we just launched it a week or so ago . We think it's better than Pandora (much larger catalog, smarter algos, more input types) - tell me if it's not. It's free on the web (no ads) with a free trial on mobile, after which we charge a small fee to cover licensing costs. If you email firstname.lastname@example.org with your account I'll comp you a free month. I'd love to know what you think.
Hm. Just tried to follow your link (on my iPad). I get a page inviting me to install an app, so I do. After creating an account, the app is basically empty, telling me I have to share some music on my computer. Weird, but ok, so I come back here and try your link again, and I still get the same page asking me to install your app. Is this how it's supposed to work?
Are you in the US? Mixes are US only at this time. Non-US users can still use the personal music streaming service though. You install a tiny piece of software on your home machine and then can access all your music everywhere for free.