Certain movie sites are not legit and you need to watch out for, by doing an online search.
Some of the best websites to watch free movies without having to register and signup are Yidio, Crackle, Snagfilms, YouTube, Gostream and POPCORNFLIX.
You can wath STARZ on this site as well.
People can stream Hulu with no ads.
Vudu is another website with free movies online. At this site you can watch movies at anytime, and anywhere. Digital movies are available, with 1000s of free movies, next day air tv, disc to digital and ultraviolet.