(Title stolen from Reddit.com.)
I feel this forum needs "generic discussion thread" for people to post anything that may not be deserving of an entire thread; even if only for my own ramblings.
Today I learned that Katakana can be confusing that Hiragana, e.g. ソン, シツ and マム. It is interesting to track the relationship between some of the kana:
Update: For what it's worth; I've now "done" all of the Katakana.