Get started with Emoji-fu Twitter Translator If you're not an iPhone - Twitter user, you might want to checkout the Emoji-fu Browser Button.
Pre-notes:
If your iPhone is already jailbroken and have activated emoji keyboard everywhere, you can skip Step 1.
If your Twitter profile is password-protected, Emoji-fu will not work. Please refer to the FAQ for more information.
Emoji is supported on Apple iPhone firmware version 2.2. If you have an older firmware, you will not be able to get emoji on your iPhone.
Setup Guide
Configure your iPhone to show the emoji keyboard.
If you have a jailbroken iPhone, please install 'Emoji' from Cydia and turn on the Emoji keyboard in Settings > General > Keyboard > International Keyboard > Japanese.
For non-jailbroken iPhone, you can now install applications available on the iTunes AppStore to enable the emoji keyboard eg. Touch Dial Emoji or Typing Genius (thanks Cory!).
Update your Twitter status with your usual Twitter client on the iPhone.
Remember to include one or two emoji so that you can see the results.
Get your new Emoji-fu Twitter feed.
1. Enter your Twitter username
2. Select your feed format
3. Your new emoji-fu feed link
Copy the feed link shown above and update your Twitter feed reader or any Twitter blog plug-ins.