ok so look at their picture or what they say if they do when they post
and list one reason why example :

^ << Rainbowdash >>
Reason: her/his profile picture

jugjing by ur picture....
The zebra

<<Pinkie Pie>>
Sorry, got it from your username. xD

<<Time Turner>>

somehow when i think of luck i also think of time and turns

<<Rarity>>

Avatar ^-^

Rainbow Ponie
Because of shiny avatar

Bouncytree a dit :

jugjing by ur picture....
The zebra

thank you <3 my favorite animal is a zebra

derpy hooves

Trixie?
Picture XD

Pinkie Pie, because of your name. (lame, I know)

<<Fluttershy>> Because of your wings

Rainbow dash cuz of avatar
e;

Jepo a dit :

Rainbow Ponie
Because of shiny avatar

it's rainbow dash

pinkie pie

Kattiej a dit :

Rainbow dash cuz of avatar
e;

it's rainbow dash

Alright, sorry.

Tina the rainbow tailed, sparkly winged, magical pony.

Holy shoot, woah, wrong topic, hahahaha.

Hm... Rainbow Dash? idk.

apple jack

Twilight Sparkle.

DJ Pon-3

hmm

bon bon?

i rlly dont know

Twilight.