Since the allegation about Weinstein came to light, McGowan has been using her Twitter account and the #RoseArmy hashtag to raise awareness and to offer support to other women making allegations against the producer.
Weinstein has denied through a spokeswoman any allegations of non-consensual contact.
So, in response to #WomenBoycottTwitter, two hashtags have started making the rounds Friday, both aimed at lifting the voices of women, of color or not, that have been silenced for too long: #AmplifyWomen and #WOCAffirmation.
"We have been in touch with Ms. McGowan's team", Twitter's chief spokesperson told The Times in an email Thursday.
It is unclear what message had fallen foul of the micro-blogging website's regulations, but according to Twitter's terms, moderators can suspend accounts if tweets have "been reported to us as violating our Rules surrounding abuse".
In addition to criticizing Weinstein, McGowan has used Twitter to slam individuals, including actor Ben Affleck, who she said knew of Weinstein's behavior but failed to act and protect victims. "The idea behind the boycott is to show Twitter that silence they seem to prefer".
McGowan joined in on the boycott, tweeting: "At midnight we RISE".
In a series of tweets to Amazon founder and CEO Jeff Bezos, the Charmed alum, 44, identified her alleged assailant by name for the first time. We will be clearer about these policies and decisions in the future.
"Twitter is proud to empower and support the voices on our platform, especially those that speak truth to power", the statement continues.
Representatives for Twitter declined to comment Thursday. "I love (Amazon) but there is rot in Hollywood".