They post about running or outfit choices or what’s for dinner tonight. Few topics are off limits for bloggers who chronicle their daily lives — and marketers want in.

Companies see potential gold mines in bloggers who post, Tweet, Facebook and Instagram their product likes and dislikes for readers to dissect.

To reach them, companies traveled to the eighth annual BlogHer conference in New York City last weekend. They came armed with deep pockets and free samples of everything from vitamins to vibrators. Many bloggers even brought along extra suitcases to haul all of their expo swag home.

“They have such a network online of consumers who are like minded,” said Jody Cook, director of communications at Pfizer. “That’s a very successful way for our brands to become top-of-mind for not only the blogger but also their communities.”

Women are an especially important group to reach because they account for the majority of household expenditures and drive most of the traffic on social-media sites with the exception of LinkedIn and Google'sYouTube, said Elisa Camahort Page, co-founder of BlogHer.

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