How does Insty post all those informative posts? AutoBlogger!

AutoBlogger is a powerful content-authoring software tool designed for online columnists and bloggers. Upon installation, AutoBlogger uses a sophisticated Artificial Intelligence algorithm to 'read' the public entries of your journal/blog to triangulate a sense of your writing style. From that point forward, any time you hit a writer's block, want to take a vacation, or simply wish to step away from your computer for a few days, AutoBlogger can be set to take over, using what it has learned about your posting and writing patterns to author original content in a voice consistent with your existing prose.

Heh. Indeed.