Since: Jan 25 2009

Behind the Name
  1. A spell invented by the Half-Blood Prince “for enemies”
  2. Considered to be Dark Magic; anything severed from a target’s body by this spell cannot be grown back by magic, according to Molly Weasley
  3. Harry cast this on Draco. Snape said afterward that there might be a certain amount of scarring, but that immediate treatment with dittany might prevent that
Source: Harry Potter Lexicon

I chose Sectumsempra as my domain name for mainly two reasons: it was a spell in Harry Potter and it heavily involves Draco Malfoy, my favorite character. The Sectumsempra scene in the Half-Blood Prince has got to be one of my favorite scenes throughout the book.