1. He watched some videos at the CNN website.
2. He watched some videos in the CNN website.
3. He watched some videos on the CNN website.
Which preposition is correct?
English Grammar - Writeacher, Wednesday, October 17, 2007 at 5:37pm
The last one is the standard idiom.
English Grammar - Ms. Sue, Wednesday, October 17, 2007 at 5:39pm
Number 3 is the most common usage. Some prepositions have such vague or multiple meanings that the "correct" preposition is more a matter of custom than of any specific wrong or right.