The direction by Justices P V Hardas and A M Thipsay came on a PIL which contends that the section would not apply if the message is in the public domain, such as the social networking sites (Facebook, etc), or a blog, or a website.
The court has sought replies within four weeks.
The petition has been filed by Majoj Oswal of the NGO 'People for Animals' (headed by BJP MP Maneka Gandhi). He contends that section 66 A is unconstitutional, and arrests under the same be stayed while the petition is being heard.
He cites the instances such as arrest of two girls at neighbouring Palghar over criticism -- on Facebook -- of shut-down in Mumbai after the death of Bal Thackeray, and the earlier arrest of cartoonist Aseem Trivedi over his cartoons.