"In computer software and media, an Easter egg is an intentional inside joke, hidden message or image, or secret feature of a work." (wikipedia.org)

ggE retsaE is just 'Easter Egg' spelled backwards, in order to make the mentioning of besaid easter egg an easter egg in itself. Such meta.

A cultural and aesthetic mind-state that prioritizes making money, even as an “underground” or “radical” creator. The work isn’t made for money, but it’s the money that matters the most.