GREY Interactive Israel | 20 followers on LinkedIn. Great Digital Partners was one of the first digital-advertising agencies in Israel. The agency was established in 2003 by Eran Arden and Guy Simhon in partnership with the Adler Chomsky Group under the global brand Gray Interactive (GI) and as part of the WPP's Gray World Wide advertising network. In 2010, the agency activity was fully acquired by its founder, Eran Erdan, and four other senior partners in the digital industry in Israel.