What else can you do man? You can only hope that your boycott encourages others. That's all you can do.

Or you can go make an app for the android. I have a few phonegap applications I've been making for different projects. When I first started everyone had iPhones, now most of the clients have moved to droids (Verizon far outperforms ATT in NYC.) and the apps still work just fine.

In conjecture, making apps for the android is probably the biggest way you can make a difference, much more then convincing a few people not to drop a few hundred dollars over the next few months. Make a few big sellers on the Android market and you'll encourage app development and make some money.

Do something productive.

Throw your weight behind a platform you do like / believe in. Create a new platform. Make an iPhone competitor.

Boycotting never makes any difference.