Dave Arneson post: What's this?

[RobJN]

"h2g2" commonly refers back to Douglas Adams' "The Hitchhiker's Guide to the Galaxy," (which describes Earth, or instance, as "mostly harmless.")

The h2g2.com project is something along the lines of the British third-cousin to wikipedia.

h2g2 is a British-based collaborative online encyclopedia project engaged in the construction of, in its own words, "an unconventional guide to life, the universe, and everything", in the spirit of the fictional publication The Hitchhiker's Guide to the Galaxy from the science fiction comedy series of the same name by Douglas Adams.[1] It was founded by Adams in 1999 and was run by the BBC between 2001 and 2011.[2][3][4] It is often compared to Wikipedia but there are differences between the sites.

The intent was to create an Earth-focused guide that would allow members to share information about their geographic area and the local sites, activities and businesses, to help people decide where they want to go and what they may find when they get there. It has grown to contain subjects from restaurants and recipes, to quantum theory and history.