Mashable has hired Megan Hess as an associate editor. Hess was previously a social media editor at Scholastic.

Lindsay Talbot has been named senior features editor at Harper’s Bazaar. Talbot was formerly an assistant features editor at Vogue. Also, Mallory Schlau has been promoted to fashion market editor. Schlau was serving as associate fashion market editor.

Will Kahn has joined Town & Country as an associate editor. Kahn was previously an associate editor at W.

The Economist has named Robert Guest as US editor. Guest was previously a business editor at the publication.

Charles Paikert has joined Financial Planning as a senior editor. Paikert was recently contributing to such publications as The New York Times and Family Wealth Report.

The National Journal has named Tim Grieve as editor of NationalJournal.com. Grieve joins the company from POLITCO, where he was managing editor.

Andrew Leisner has is now vice president and group publisher of the motorcycle group at The Bonnier Corporation. Leisner was previously publisher at Cycle World.

Men’s Health has promoted Brian Boye to executive fashion director. Boye was serving as fashion director. Sandra Nygaard will take over the role of fashion director. Nygaard was fashion editor at the magazine.