AdExchanger's Ryan Joe presents a useful roundup of snapshots that help marketers navigate the confusing world of ad tech consultancies "offering a guiding light through a thicket of confusion". Love the use of "thicket of confusion". What an understatement. Joe includes details on the following consultancies: Deloitte Digital, Infinitive, Jounce Media, MediaLink, Prohaska Consulting, Promatica Consulting and Unbound.