If I want to say something like

I watch videos at/in/on MIT open courseware.

Shall I use 'at'/'in'/'on'?
More generally, when talking about websites, which one shall I use?

  • 1
    I'd say on, considdering 'MIT open courseware' as the platform on which you watch videos. You also watch videos on YouTube.
    – Vlammuh
    Jul 25, 2015 at 6:48
  • Somewhat related questions: here and here Jul 25, 2015 at 8:36

2 Answers 2


I suggest you to use "on" because when we are watching something on screen, using "on" is more appropriate.

  • 4
    Please be more elaborate. Unsourced claims may be downvoted or deleted.
    – M.A.R.
    Jul 25, 2015 at 9:37

A website is an address so you watch at. Not on.

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