Rael Dornfest is an American computer programmer and author. He was a technical fellow and CTO of, and was previously an engineer at Twitter. He was founder and chief executive officer of Values of N, creator of "I Want Sandy" and "Stikkit: Little Yellow Notes that Think." Previously, he was chief technology officer at O'Reilly Media. He began working for Twitter after they bought the assets of his company Values of N.[1]
He led the RSS-DEV Working Group, which authored RSS 1.0 and is the author of Blosxom, a lightweight Perl-based publishing system.[2]
He was series editor of O'Reilly's Hacks series, and has coauthored a number of books including Google Hacks, Mac OS X Panther Hacks, and Google: The Missing Manual .