Notification Message: Skype shows smiley, Facebook shows a demon.

Having real conversation with my wife: got notification an angel smiley in SKYPE, while it is a demon in FACEBOOK.

My wife and I having real conversation today she send me an angel smiley in Skype, while it is a demon one shows in facebook. What does it mean? Did the number "3" affect smiley? hehehe
looks like its unusual behaviour? have you encountered this one guys....?
This the funniest bugs i've ever found. :-)

Please feel free to comments.

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Thanks Guys/Gally.