So I've been RPing as ponies on MSPARP (before it went down) and I've developed typing quirks for the entire Mane 6 p, plus Luna.

Twilight Sparkle: Perfect grammar and spelling as always!
Rainbow Dash: entirely lowercase and no punctuation but types words like AWESOME and SONIC RAINBOOM in all caps
Rarity: Captalizes words to put Emphasis on them.
Fluttershy: entirely lowercase and doubles question marks and exclamation points!!
Applejack: spells chalenjing words wrong and uses lowercase
Pinkie Pie: ALLLLLL CAPS! STRECHESSSSSS OUT THE LAST LETTER OF THE FIRST WORD IN EACH SENTENCE!!!!!!!!!!! TOOOOO MANY PUNCTUATION MARKS!!!!!!!!!!
Luna: USES THE ROYAL CANTERLOCK VOICE AND THE ROYAL WE.

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I don't get Shy's? but for the most part it is good, I think I read a story where AJ typed in her ascent, but only because every pony keep bugging her how wired it was to read what she said with out it.

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You've been roleplaying as the mane six? I appluad you.
Good to see more people use MSPARP.