BusinessWeek has joined the crowd, putting one editor in charge of print and online for each of eight major content areas, according to a memo obtained by TalkingBizNews (via Romenesko). As part of the changes, a dozen business and editorial staffers will be laid off. The new structure goes into effect Jan. 1.  While coverage is intended to be seamless between the print and the web, at the top, oversight will still be divided with print and online each having its own managing editor.  In the memo, Stephen Adler, the McGraw-Hill (NYSE: MHP) mag’s editor-in-chief, described the most recent change as the completion of a three-year “vital transformation.” Adler also tossed out some stats, including a new online usage record in November with 64.7 million page views and newsstand sales up 25 percent.