I added a note that Sting glows in the vicinity of giant spiders. In the Hobbit, the spiders were able to track Bilbo while he wore the Ring, because they could still see the light shed by Sting. Sting also glowed when [Frodo] and Sam faced Shelob in her cave, and when Sam later fought Shelob in the pass.
Sting also cut through Shelob's webs and the webs of the spiders of Mirkwood without difficulty, while Sam's blade from the Barrow Downs (made in Arnor for use against Angmar) wouldn't cut Shelob's webs.
What is the origin of the name Maegnas? I was not aware that Sting had any name before Bilbo gave it one; there was no mention of runes on the blade when Thorin and Company had Elrond read the runes on Glamdring and Orcrist during their stopover in Rivendell. It seems a tad convenient that runes on the blade (that no one noticed in The Hobbit) just happen to have almost the same meaning as the name Bilbo gave the blade. --Ted C 13:20, 21 November 2006 (EST)