Teresa Nielsen Hayden is an American science fiction editor, fanzine writer, essayist, and workshop instructor. She is a consulting editor for Tor Books and is well known for her weblog, Making Light. She has also worked for Federated Media Publishing, when in 2007 she was hired to revive the comment section for the blog Boing Boing. Nielsen Hayden has been nominated for Hugo Awards five times.

Boing Boing is a website, first established as a zine in 1988, later becoming a group blog. Common topics and themes include technology, futurism, science fiction, gadgets, intellectual property, Disney, and left-wing politics. It twice won the Bloggies for Weblog of the Year, in 2004 and 2005. The editors are Mark Frauenfelder, David Pescovitz, Carla Sinclair, and Rob Beschizza, and the publisher is Jason Weisberger.