The creator of Commentica was inspired by the poor commenting systems he found on two of his favorite websites.
In one case a news website always disables comments when a story is controversial. However, this is exactly the type of story where one wants to read the comments to see the viewpoints of other readers. The comment system used by the web site also lacks basic features such as threading and uses a very simplistic comment rating system.
The other case is another news website that does not offer comments at all.
Commentica is a simple solution that allows anyone to comment on these and other websites, regardless of a website's own commenting system and moderation policies. The hope is that this will further encourage open dialog on the web.