Using websites to pour out one's grievances is called

Cyberventing is the practice of using websites to release frustration and air one's complaints publicly online.

Cyber ranting sounds similar but is not the accepted label for this grievance-airing behaviour.

Web hate points to hostile or hateful online content rather than venting personal grievances.

Web plea suggests an online appeal or request, not the outpouring of complaints.

The act channels emotion onto blogs, review pages and social sites aimed at a company or person.

Sustained cyberventing about a brand can shape its online reputation quickly.