Terra.es is the portal of the ISP Terra Networks Spain. The end of 2004 saw the fifth anniversary of its launch, which they decided to celebrate by letting Internet users know it was their fifth birthday and inviting them to take advantage of free online events such as concerts, card competitions, etc.Objectives: generate traffic to the Terra site and build user loyalty. The aim was to involve Internet users by inviting them to celebrate Terra's fifth birthday through interactive elements in which the user could blow out candles, pull the birthday boy's ears, play "Happy Birthday to You" on the piano or blow a party streamer.