THE Eater blog empire is expanding. The popular restaurant site is launching a national edition and adding correspondents in Las Vegas and Miami. The site also acquired nightlife blog Down by the Hipster in an effort to beef up its bar and nightclub coverage. “As soon as the M&A market heated up again, we knew we had to make a quick move for DBTH,” Eater founder Lockhart Steele tells Page Six. “After years of watching [editor] Scott Solish torment the denizens of the city’s nightlife world from afar, we’re tickled that he’s joining the Eater team.”