blurb(n = noun.communication) endorsement, indorsement - a promotional statement (as found on the dust jackets of books); "the author got all his friends to write blurbs for his book"
is a kind of packaging, promotion, promotional material, publicity

blurb, n. a (usu. eulogistic) description of a book, esp. printed on its jacket, as promotion by its publishers.

Etymology:
coined by G. Burgess, Amer. humorist d. 1951