Adi Kamdar, an activist specializing in free speech issues at the Electronic Frontier Foundation says he's concerned about the effect these efforts may have on consumers' ability to freely share their experiences.
"So they're willing to go the extra mile, even if it's chilling consumer speech, in order for those to be taken down," Kamdar says.
The legal effort to muzzle a consumer is often referred to as a "SLAPP," or strategic lawsuit against public participation. Kamdar urges consumers to be wary of any contract language limiting their ability to share reviews.
"Having something in your contract that basically says you're not allowed to say anything bad about us goes against the idea of free speech, goes against the idea of consumer protection," Kamdar said.