Gum maker Lotte is collaborating with YouTube to promote Lotte’s new Fit’s Gum, a new soft gum with a packaging innovation where the gum slides out in individual paper sleeves. To drive home the point, Lotte created a campaign to engage their online and mobile base with an interactive dance campaign.The Fit’s Dance Contest began with a catchy (perhaps a little TOO catchy) jingle accompanied by young celebrities doing a special dance that can only be described as “very Japanese”. It’s cute, catchy, and full of smiles.Until April 27th, dancers at home can enter their own takes on the Fit’s dance, upload it to Lotte, and compete for up to $10,000. The campaign is using Lotte’s own site to distribute information and receive videos, and using YouTube to spread the best ones. It also comes complete with blog parts that teach the dance steps with an animated figure.