This article discusses a semantics issue of a Unicode character.
Yesterday, i sent 6 hours researching a song: Yoko Kanno - Moon. It's a song from a Japanese animation titled 〈Ɐ Gundam〉, which is read as “Turn A Gundam”.
However, on Wikipedia they used the Unicode char ∀ (U+2200; FOR ALL), not Ɐ (U+2C6F; LATIN CAPITAL LETTER TURNED A).
So, i spend a total perhaps 30 min on this issue, researching on the issue of which of the two Unicode character is more proper. (that I myself would use on my website. (my writing on my website is pretty meticulous like this.)).