I may be late to the party, but I just noticed today that Amazon’s Appstore for Android is now offering one paid app, for free, every day.  Today’s offer is Shazam, which normally costs $5. Also available: Angry Birds Rio. (More Angry Birds goodness for free!)

Although I’m not a fan of installing yet another app installer, this looks like it could be worthwhile if Amazon’s going to help subsidize the cost of some of the paid apps out there and offer some worthwhile apps for free (if only for a day).  Plus, by going through Amazon you also get to use their always-helpful recommendation engine, which helped me to find 2 or 3 other apps I was interested in but would have had extreme difficulty finding on the hard-to-navigate Android Market on my phone.