syzygy - Scrabble doesn't have enough 'y's.
Bryant - there is some latitude for you to self police. I wouldn't stop yourself from using tutorials - this is why you read them and thats the idea. If you feel like a script or a component gives you an unfair advantage why don't you post a link to the script for others. After that its artistic sense and fair competition as far as I can see.
If people like your stuff posting sources and inspiration is always appreciated.
Sigurd