For Twitter, dependent on celebrities, the prospect of a showbiz civil war over the Weinstein allegations represents a major problem for the company.
The tweet was deleted, and Independent Journal Review asked McGowan whose number it was, but she didn't answer before publication. It's unclear what movie McGowan is referring to.
McGowan has since criticised other major Hollywood figures for failing to confront Weinstein, at one point tweeting: "You all knew".
Although it's not clear exactly who McGowan was talking to besides Bezos, at a 2016 Independent Filmmaker Project event in Brooklyn, the actress said she had sold a script to Amazon.
The platform has also been criticised for taking too long to respond to comments from online trolls and neo-Nazis sympathisers.
We haven't been able to confirm the details of the tweet that lead to McGowan's suspension, or whose private number she posted, or whether it was in an old tweet or a recent message.
Amazon and The Weinstein Co. are partners on two forthcoming streaming TV series.
McGowan's name has come up in connection with Weinstein before.
Last week, the New York Times reported why. The story revealed that McGowan had reached a $100,000 settlement with Weinstein in 1997, when the actress was in her 20s, over an "incident" in a hotel room at the Sundance Film Festival. That settlement included provisions about speaking about the case in the future.
Farrow was investigating Weinstein for NBC.
"Over and over I said it", she continued. Girl will just not give in and I am here for her fire.
While McGowan has avoided addressing her past with Weinstein directly, she has often seemingly referenced it.