Today’s featured promo on MacUpdate offers RAGE Domainer for US$24.95 (38% off, retail $39.95). “Use RAGE Domainer to track and manage all your domain names. RAGE Domainer allows Web site owners to centralize domain details, as well as those of their competitors, with one easy-to-use application. Domainer provides an overview of a domain’s value through various popularity measures including Google PageRank, AlexaRank, incoming back links, and social tags.” RAGE Domainer requires Mac OS X 10.4 or later.