SAN FRANCISCO, United States(AFP) – Snapchat on Wednesday unveiled a redesign intended to rev up use of the image-sharing smartphone application by focusing on personal interests instead of what friends post. Parent company Snap has promised the redesign in a bid to make Snapchat more user-friendly in the face of competition from rival messaging apps, especially those fielded by leading social networking Facebook. Snap changes included separate streams for posts or messages from close friends versus […]