Actually, when we started making these comics, Moondancer/Twinkle had both names listed on the FiM wiki. This is because in the 1980's MLP, there was a pony named Moondancer who looked similar to Twinkle/Moondancer (red mane, white coat, stars and a moon cutie mark).Needless to say, the FiM wiki changed to make Moondancer/Twinkle only Twinkle (with a separate, pictureless entry for the mysterious Moondancer) after we started making the comics (but i am sort've hoping to get the name changed back).As to the name choice in and of itself, as far as i can tell, the fan names are completely arbitrary and the only reason "Twinkle" was ever considered was because Moondancer/Twinkle had the line, "Moondancer's having a little get together in the west castle court yard."We decided to interpret this as a personality quirk of Moondancer's (hence the name). Others, it seems, interpret this as proof positive she wasn't Moondancer, but simply talking about Moondancer.Really, i don't mind either. In fact, it's my contention that everypony else (including in-universe Ponyvillians) is confused about Moondancer's name and think she is a pony named Twinkle who is simply obsessed with Moondancer.Sorry for the wordiness, but i hope that answers your question.