This is said to feature the first known use on television of "Google" as a verb when Willow asks, "Have you googled her yet?" and Xander responds "She's 17!"
Cassie's name is an obvious reference to the mythological Cassandra. In the world of Greek/Roman mythology, she was a seer whose visions always came true. However, after rejecting the advances of the god Apollo, he placed a curse on her that ensured that her prophesies would never be heeded. This is reflected in Cassie's various predictions, which are in time realized, regardless of the surrounding people's doubts and disbelief.
Despite credited, Emma Caulfield Ford and Beth Skipp do not appear in this episode, as their only scene was cut. In the scene, Anya attempts to get a woman named Lulu to make a wish in revenge for her boyfriend forgetting her birthday, but accidentally ends up counselling her into forgiving him instead.
This is the second time that Buffy refers to herself as "Buffy, the Vampire Slayer," the first time being in Anne (1998).
Willow mentions posting fan fiction of Doogie Howser, M.D. (1989) online. Doogie Howser was played by Neil Patrick Harris, who would go on to star in How I Met Your Mother (2005) with Alyson Hannigan.