Feminist website Jezebel gets deluged with rape porn gifs.

[stevenleser]

92. It definitely can be, particularly obscene content. The key is the intent and repeated nature.

http://en.wikipedia.org/wiki/Cyberstalking

Cyberstalking is the use of the Internet or other electronic means to stalk or harass an individual, a group, or an organization.[1] It may include false accusations, defamation, slander and libel. It may also include monitoring, identity theft, threats, vandalism, solicitation for sex, or gathering information that may be used to threaten or harass.

Cyberstalking is often accompanied by realtime or offline stalking.[2] Both are criminal offenses.[3] Both are motivated by a desire to control, intimidate or influence a victim.[4] A stalker may be an online stranger or a person whom the target knows. He may be anonymous and solicit involvement of other people online who do not even know the target.

Cyberstalking is a criminal offense under various state anti-stalking, slander, and harassment laws. A conviction can result in a restraining order, probation, or criminal penalties against the assailant, including jail.

http://www.law.cornell.edu/uscode/text/47/223

47 U.S. Code § 223 - Obscene or harassing telephone calls in the District of Columbia or in interstate or foreign communications

(a) Prohibited acts generally
Whoever—
(1) in interstate or foreign communications—
(A) by means of a telecommunications device knowingly—
(i) makes, creates, or solicits, and
(ii) initiates the transmission of,
any comment, request, suggestion, proposal, image, or other communication which is obscene or child pornography, with intent to abuse, threaten, or harass another person;
(B) by means of a telecommunications device knowingly—
(i) makes, creates, or solicits, and
(ii) initiates the transmission of,
any comment, request, suggestion, proposal, image, or other communication which is obscene or child pornography, knowing that the recipient of the communication is under 18 years of age, regardless of whether the maker of such communication placed the call or initiated the communication;
(C) makes a telephone call or utilizes a telecommunications device, whether or not conversation or communication ensues, without disclosing his identity and with intent to abuse, threaten, or harass any specific person;
(D) makes or causes the telephone of another repeatedly or continuously to ring, with intent to harass any person at the called number; or
(E) makes repeated telephone calls or repeatedly initiates communication with a telecommunications device, during which conversation or communication ensues, solely to harass any specific person; or
(2) knowingly permits any telecommunications facility under his control to be used for any activity prohibited by paragraph (1) with the intent that it be used for such activity,
shall be fined under title 18 or imprisoned not more than two years, or both.
.
.
.

See additional parts of the statute