Emoji keyboard on iPad is back on the new iOS 4.2.1. Simply use the old spell number trick. Please check http://bit.ly/freeemoji for the detail instruction.

If you can see emoji keyboard in notes app. Congratulations, you have enabled the emoji keyboard. But some users set they can't use it on other apps. You can try the following fixes:

1. Reboot the iPhone, iPod Touch. Long press the power button, slide the slider to turn off the phone completely. Then press the button again after the screen is off to turn it on again.

你可以在已 jailbreak 或未 jailbreak 的 iPad 上輸入 emoji 圖案，方法非常簡單。以下就是輸入的方法:

Today I help my friend to enable emoji using Spell Number. I found that the emoji option didn't show up after I enter the secret code 91929394.59 on Spell Number. I guess that in newer OS, the preference is cached. So I reboot the iPhone and the emoji option can be shown correctly.

1. What's emoji?
   Emoji is a set of unicode characters with colorful smily faces and other icons, that is popular in Japan. You can use it as normal text so that you can enter almost all iPhone applications. However emoji is not standard unicode characters that is not defined in unicode standard. It means that different vendors will have different standard on emoji; currently NTT DoCoMo, au 及 SoftBank Mobile. iPhone/iPod Touch uses the emoji defined by SoftBank, the carrier on iPhone in Japan.

If you use twitter a lot, and want to see emoji icon of twitter messages in Mac, you should try EventBox. The application natively support emoji, so you didn't have to do anything to view emoji in twitter. Moreover, it supports not only twitter buy most social networking tools that you named.

Website: http://thecosmicmachine.com/

Okay, emoji is hot now, but it is not when you cannot see it in desktop web browser. Especially there are tons of messages in twitter that use emoji. Now there is a solution to view emoji icons on desktop, but you have to use Firefox as web browser. Firefox is a advance web browser that is as least as good as internet explorer and safari, and it is cross platform that support Windows, MacOSX and Linux. You can download firefox here:

http://www.mozilla.com/firefox

Yesterday, there is a new application is released in AppStore called "Emotifun" that officially announce that the one and only one function of the application is to unlock the emoji icon keyboard. Actually, I have submit similiar application to Apple two week ago but got rejected. So it is very interesting that why Apple allow this applications to be put on AppStore.

plutil -1 KeyboardEmojiEverywhere /User/Library/Preferences/com.apple.Preferences.plist