By CommPro.biz Editorial StaffGreat Agencies, a California-based research and reporting firm focused on ranking agencies and vendors in the digital space, announced its latest rankings. The report identifies and ranks the leading US-based digital firms in the following spaces: SEO, PPC, Big Data, Business Intelligence, Penalty Removal, Digital Marketing, Branding, Public Relations Software Development, Mobile App Development, 3D Design, Animation and Promo Videos."Our research remains focused on transparent vendors that deliver measurable results consistently for their clients. And that happens to be our biggest metric when evaluating these companies - evidence of a proven track record and continuous results provided in the vendor's respective space," said Chelsea Gilbert, spokesperson for Great Agencies.Listed below are the top firms in each respective field, according to the Great Agencies report:SEO-Boostability-Year Three-180 FusionPPC-Jumpfly-Hanapin Marketing-Anvil MediaBig Data Analytics & Business Intelligence-CBIG Consulting-Latent View Analytics-Anthem Marketing SolutionsPenalty Removal/Recovery-Penalty Be Gone-PortentReputation Management and Branding-Bulldog Drummond-Brand Juice-Reputation ResolutionsDigital Marketing Agencies-360i-Razorfish-Enveritas GroupPublic Relations-WeissComm Group-Grayling-Motion PR