I love puzzles of about all kinds, so I wanted to make one myself.
Current and later inspiration you may see are from:
Cipher
Dracula's Riddle
E.B.O.N.Y.
Inward Hellix
Marv Riddle
MIT Mystery Hunt
Neutral Riddle
Notpron
Oddpawn
op011
Ouverture Facile
weffriddles
Zahada
Zest