As far as I can tell, there's no way to authenticate into the website when visiting http://omdbapi.com, yet when trying to use the example, it sends the following request:
http://www.omdbapi.com/?i=tt0108941&apikey=PlsBanMe
which results in a 401 and the following response message:
{"Response":"False","Error":"Request limit reached!"}
Side note: I have paid for an API key.
See screenshot for detail from UI:

As far as I can tell, there's no way to authenticate into the website when visiting http://omdbapi.com, yet when trying to use the example, it sends the following request:
http://www.omdbapi.com/?i=tt0108941&apikey=PlsBanMe
which results in a 401 and the following response message:
{"Response":"False","Error":"Request limit reached!"}Side note: I have paid for an API key.
See screenshot for detail from UI: