5-year old Caitlyn often sees Yahoo Messenger in action as her parents communicate with their friends, relatives, and to each other when one is out of town. Yesterday, she just blurted out to her mom, "this is how Yahoo smiles".
She likes the Yahoo Messenger smiley so much that she even draw and now practicing how to spell Yahoo.
Come to think of it, all that Yahoo! Messenger "cuteness" really has an effect. Seeing that smiley icon jumping while you are opening the program is like creating a feeling of "anticipation" that you are about to chat with someone special.