Top site for "dark mark": harrypotter.warnerbros.com

Title: Harry Potter - The Official Site
Description:
The Official Harry Potter Website offers content, games and activities which seamlessly extend the magical world of Harry Potter beyond the big screen. Visitors can enroll in Hogwarts, the school of wizardry that Harry attends, but they can also practice Quidditch, the favorite game of the young wizards, help herd a Hippogriff and even attend the same classes featured in the movies, Harry Potter and the Sorcerer’s Stone, Harry Potter and the Chamber of Secrets and Harry Potter and the Prisoner of Azkaban. Rich visuals taken directly from the film are used to further immerse guests in the magical environment that millions of fans have come to love. Viral components and downloadable content, including Harry Potter screensavers, buddy icons and wallpapers are included to allow the experience to continue on even when fans are away from the site. Harry Potter fans are also encouraged to explore the Hogsmeade Walkthrough, create and make their own Harry Potter Holiday Wish List and email it to their friends and family, as well as check out the additional Harry Potter minisites designed around the new characters and exciting events from Harry Potter and the Goblet of Fire, including the Mad-Eye Moody site, the Yule Ball site, the Dark Mark site and the Triwizard Tournament site.

Approx. monthly SE traffic: 4.25M
Approx. monthly SE traffic cost equivalent: $2.25M