The data is clear: When it comes to driving web traffic, organic search reigns supreme.

A report from BrightEdge found that organic drives 51 percent of all visitors for business-to-business and business-to-consumer businesses. Among other forms of search, paid search accounted for just 10 percent of traffic, while social captured a tiny 5 percent. Other forms, including display, email, and referred traffic, captured 34 percent.

BrightEdge also examined the variations in search across industries. For business services, organic searches accounted for a whopping 73 percent of traffic. Media and entertainment came in second, with 51 percent of traffic deriving from organic. For both industries, paid search and social made little comparative impact in overall traffic.