Below are some links to several wonderful Internet resources for screenwriters:
Creative Screenwriting ~ The web site for Creative Screenwriting magazine
DVXUser ~ Simply the best independent filmmaking web site
Filmmaker ~ The web site for FilmMaker magazine
IMDB ~ The Internet Movie Database
Movie Bytes ~ The source for all of your screenwriting contest questions
MovieMaker ~ The web site for MovieMaker magazine
NJ Film School ~ A New Jersey studio offering filmmaking classes for all ages
Script ~ The web site for Script Magazine
Stage 32 ~ The social network for screenwriters and filmmakers
Simply Scripts ~ Sister site to Movie Poet