I don't usually use FiMFiction. I'm more active on PonySquare, BronySquare, YouTube, deviantART and iBrony.
PonySquare:
http://ponysquare.com/TheSpyIsAPyro/
BronySquare:
http://bronysquare.com/radrushingpony/
YouTube:
http://youtube.com/user/EquestrianPony2213
deviantART:
http://pokemon1332.deviantart.com
iBrony:
http://www.ibrony.com/index.php?do=/CursedRushingPony
Hey, sometimes I can post my fan fics on deviantART. =P