I generally see "sign up for" online, but I've noticed "sign up to" in a few places. Is that an acceptable alternative when talking about signing up for a service?

For example, PayPal says "It's free to sign up to PayPal." Is "PayPal" serving as a verb in that case?

The same for the title of the Airbnb sign up page: "log in/sign up to Airbnb".

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  • "I've noticed "sign up to" in a few places." You could you point to an example or two, where we can see the expression in context? – michael.hor257k Feb 17 '17 at 14:48
  • @michael.hor257k Just added two examples. – Tin Man Feb 17 '17 at 15:33
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    I don't see the phrase "sign up to PayPal." in the page you have linked to. Nor can I find an Airbnb page with the claimed title. – michael.hor257k Feb 17 '17 at 15:47
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    @TinMan I guess you greatly overestimate the amount of time I am willing to devote to your question. – michael.hor257k Feb 17 '17 at 18:16
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    I can't find the phrase "sign up to." I would suggest you put a screenshot in your question. – aparente001 Feb 19 '17 at 19:59

The terms are not the same, but similar.

You sign up for (a noun, like hockey or excitement), and sign up to (a verb, like win, or play hockey).

Sign up for fun. Sign up to have fun.

Sign up for the time of your life. Sign up to have the time of your life.

How sign up to (PayPal or Airbnb) makes sense, I do not know. Paypal does not serve as a verb, but then anything goes on the internet, not necessarily serving as an example of good style.

  • I've added some details to my question. (I don't think it will change your answer, but it's more concrete.) – Tin Man Feb 17 '17 at 15:31

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