  In the last years, hundreds of new Youtube channels have been creating and
sharing videos targeting children, with themes related to animation, superhero
movies, comics, etc. Unfortunately, many of these videos are inappropriate for
consumption by their target audience, due to disturbing, violent, or sexual
scenes. In this paper, we study YouTube channels found to post suitable or
disturbing videos targeting kids in the past. We identify a clear discrepancy
between what YouTube assumes and flags as inappropriate content and channel,
vs. what is found to be disturbing content and still available on the platform,
targeting kids. In particular, we find that almost 60\% of videos that were
manually annotated and classified as disturbing by an older study in 2019 (a
collection bootstrapped with Elsa and other keywords related to children
videos), are still available on YouTube in mid 2021. In the meantime, 44% of
channels that uploaded such disturbing videos, have yet to be suspended and
their videos to be removed. For the first time in literature, we also study the
"madeForKids" flag, a new feature that YouTube introduced in the end of 2019,
and compare its application to the channels that shared disturbing videos, as
flagged from the previous study. Apparently, these channels are less likely to
be set as "madeForKids" than those sharing suitable content. In addition,
channels posting disturbing videos utilize their channel features such as
keywords, description, topics, posts, etc., to appeal to kids (e.g., using
game-related keywords). Finally, we use a collection of such channel and
content features to train ML classifiers able to detect, at channel creation
time, when a channel will be related to disturbing content uploads. These
classifiers can help YouTube moderators reduce such incidences, pointing to
potentially suspicious accounts without analyzing actual videos.
