Kellogg’s Rice Krispies and Post’s Pebbles identified as 2020’s ‘Most Influential Cold Cereal Brands’ 27-May-2020 By Gill Hyslop IZEA’s BrandGraph – which measures online influencer content – found Rice Krispies was mentioned organically by influencers in over 11k posts during a 12-month analysis, followed by Pebbles in nearly 8k posts.