Banquo introduces a lot of snazzy changes, but one of these changes had us puzzled – the smiley Snapchat ghost logo we’d grown to know and love, Ghostface Chillah, was altered so he had no face.

Snapchat, the popular social network startup that lets users send each other photos that quickly disappear, has given its logo a facelift. Since launching in 2011, the Los Angeles-based company ...