Most notably, there is an unusually active group of people whose screen names are from the AMC television show “Mad Men,” and they have been posting updates in the characters’ voices.For instance, the Twitter version of Don Draper, the creative director for a circa-1960s advertising agency, adheres rather closely to his television persona. “Heading into a meeting with @Roger_Sterling,” the user wrote on Wednesday, referring to Mr. Draper’s television boss.
Mr. Draper’s virtual self has nearly 2,000 followers on the Web site. There are also Twitter accounts in the names of Mr. Sterling and Peggy Olson, as well as other characters from the series.
