I have signed up with no less than 4 or 5 streaming radio services, and whenever I talk to any of my geek friends (especially the musician types), they mention a new one. All start out free, of course, and then offer premium plans to increase the quality or decrease the ads that inevitably come. Several incorporate a feature that I refer to as "computer DJ". You select or enter an artist or song name string in an input form, and the service builds a sterile stream of tunes that match your entry based on similar song characteristics. I'm still old school enough to appreciate when a DJ queues up a special mix of varied tunes. Slacker is bucking the trend of "computer DJ" repetition and monotony by employing the real thing--actual people working behind the scenes to create the magic that I'm talking about. The result is sometimes surprising and refreshing, and their varied content offerings make this service a real standout!
Early on, when the number of iPhone apps was in the thousands, the App Store was a good way for users to find apps and for developers to bring their apps to the attention of users. Now that there are over 200,000 apps, the App Store isn't that helpful.
When you do a search on a topic in the iTunes store, you might get hundreds of results. They are displayed in no particular order and there is no way to sort them according to most popular, best-selling, free vs. paid, etc. The 20 broad categories also aren't that useful, since there are so many apps that don't obviously fit any particular category. Fortunately, the Internet can help. In this article, I'll point you to some useful lists of the best apps.
Slacker (slacker.com) is a free service that lets you specify the music which interests you and create a personal station that streams that type of music. Like Pandora Radio (summer ’09 issue, page 62), Slacker Radio makes it easy for you to create your station. You can begin by simply naming your favorite song or artist.