In a study using data from 5,048 customers and surveys from 236 professionals knowledgeable about their company’s marketing strategy, HubSpot has found that virtually all of its customers experienced an increase in traffic since using HubSpot, with a plurality (25.1%) attributing that increase to blogging. SEO (18.9%) social media (16.9%) and email marketing (13.5%) also got the nod for traffic increases, although few said paid search ads (5.6%) were behind their gains.