An online petition is a form of petition which is signed online, usually through a form on a website.
A website, also written as web site, is a collection of related web pages, including multimedia content, typically identified with a common domain name, and published on at least one web server.
A petition is a request to do something, most commonly addressed to a government official or public entity.
Visitors to the online petition sign the petition by adding their details such as name and email address.
Typically, after there are enough signatories, the resulting letter may be delivered to the subject of the petition, usually via e-mail.
Electronic mail is a method of exchanging messages between people using electronics.
The online petition may also deliver an email to the target of the petition each time the petition is signed.