Founder Borivoj Krgin came up with the concept of Blabbermouth in January 2000. Robert Kampf, a friend of Krgin who runs Century Media Records, was staying with Krgin in New York and set up a meeting with Gunter Ford of World Management. During the meeting, Ford suggested an idea for a "heavy metal portal," a site which would offer news, merchandise, and CD reviews to get record labels to sell their products through the site. Ford wanted Kampf to be involved. Krgin disliked the idea and wished for a site that offered around-the-clock news, as he thought that no good news sites existed.
Krgin began researching how to develop and host his own website two months after the meeting. After a year Krgin felt comfortable going "live." The initial "primitive" version of the site was launched on March 3, 2001. In October of the same year Monte Conner, a friend of Krgin, and a Roadrunner Records artist and repertoire approached Krgin with the idea of having the site hosted on the Roadrunner servers. This way, Krgin could focus on Blabbermouth.net's content rather than the technical aspects involved in running a site.
Blabbermouth.net is described by the London Free Press as a "reliable industry and fan site".