PlanetHeidi refers to the URL of the webcomic "Heidi, Geek Girl Detective"
The comic follows the adventures of Heidi Hoffman, a dot-com refugee, who stalks the streets of Seattle solving crimes with her technical talents and unrelenting stubburness. Many Seattle landmarks crop up in the webcomic, including Pike Place Market, Belltown, West Seattle and of course, the seamier parts of the city as well.