Miller noted one area that's picking up, as prospective buyers, both financial and strategic, are taking a closer look at newsletter companies.
Miller stressed that, from a business perspective, newsletters have come of age.
"Traditionally, newsletters have been produced by individual executives and journalist types, and they haven't been run in the most efficient manner, ending up subscale," he said.
"Now, there's been a generational shift, and you have younger companies that are bringing a more businesslike approach to newsletters and whose profits are increasing."
Miller cited Eli Research as an example of the new breed of newsletter companies.