Windows Phone Thoughts: More Emoticons Coming in Mango

This may seem like a silly thing to get excited about, but I actually quite like having the one-tap access to various emoticons on current Windows Phone 7 devices. I tend to be one of those "emoticon" people, and having access to more of them will be great. I do wonder though how good they'll translate across other devices. Some of the emoticons above look like Wingding font icons, so I wonder if many of these will only work in a Mango to Mango phone scenario.