Signup

noun
1.
an act or instance of signing up.

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Sign-up
noun 1. an act or instance of signing up.
Signups
noun 1. an act or instance of signing up.
Signy
noun, (in the Volsunga Saga) 1. the daughter of Volsung and mother, by her brother, Sigmund, of Sinfjotli, with whose help she kills her husband (Siggeir) to avenge his murder of Volsung.

Sig quote
messaging /sig kwoht/ A maxim, quote, proverb, joke, or slogan embedded in one’s sig block (as used in Usenet news) and intended to convey something of one’s philosophical stance, pet peeves, or sense of humour. “Calm down, it’s only ones and zeroes.” [Jargon File] (1994-11-04)
Sigrdrifa
noun, (in the Elder Edda) 1. a Valkyrie who, for disobedience to Odin, sleeps within a circle of fire until awakened by Sigurd.