Remove SDKs from Mac

I tried several mobile platform SDKs on my MacBook Unibody. These SDKs might get several updates within a year. During the update, there may be left over files which are no longer necessary. Here is a few steps I found online regarding how to remove these SDKs from Mac.

iPhone SDK (now iOS SDK)
1. Open a Terminal window.
2. Type the following command:
sudo /Developer/Library/uninstall-devtools --mode=all
3. Type your administrator password.
4. Wait.

"--mode=all" will remove all SDK and files related to Mac OS development (Note: iPhone OS is a subset of Mac OS). It will remove all install components inside the "Developer" folder.

Qt SDK
1. Open a Terminal window.
2. Type the following command:
sudo /usr/bin/pythonw /Developer/Tools/uninstall-qt.py
3. Type your administrator password.
4. Wait.

Qt Creator
1, Drag its icon to trash.

Nokia Qt SDK
1. Use SDKMaintenanceTool

Canceling a Kindle Content order

好耐無試過打電話去美國了...

事緣唔知點解會在 Kindle 上 order 咗本很貴的 C++ GUI Programming with Qt4，USD40，打去 Amazon，六分鐘搞掂（快過香港CS好多），一分鐘後本書從 Kindle 上消失。

希望月底時信用卡月結單上，真係無被人收到錢啦。