Flipnote Hatena was an online service for flipnotes that was shut down on May 31, 2013. Looking back it was a huge part of my childhood and such wanted to locate as many flipnotes as possible. Many of these are lost
I can also maybe help you out in identifying a flipnote as well! Just discuss! Also, if you have any archives throw them in too
At the top of my head I remember a creator who drew Griffin characters. One of these was animated to a song called Cash Cash radio. The flip followed a Griffin who was hit by a car and then experimented on by scientists. I also remember the creator having an issue with another creator by the name of Meep. Meep drew animal characters and sheep in particular.
I will soon be creating a youtube playlist with as many flipnotes from Hatena as possible, so if you want to help with that do so!