When uploaded, Flipnote animations were placed into specific categories by their creators. These categories, known as "channels," included general classifications such as "Musical" and "Comedy," as well as more specific categories suggested by popular Flipnote users and accepted by Hatena. For example, one category entitled "Stick Figures" was suggested by the creator of a popular comedy Flipnote series known as TeenChat. The series' animated cast, which consisted of floating faces and stick figures, established a basis in character design for comedy Flipnotes. Another category that a user suggested to Hatena was a "Spoof" category, which included Flipnotes imitating songs, movies and other media. Users were able to place categories they visited or contributed to most often into their own "Most Visited" folder. The last Flipnote category to be added before the closing of Hatena in May 2013 was "Birds," a small category mainly consisting of a popular "Flipnote series" known as Birdie BAI.