If stickers and filters on Snapchat ... In the world of social apps, Tumblr is the weird-but-cool friend who keeps to herself. While Snapchat and Instagram go head to head, Tumblr has been ...

Tumblr is the latest platform to go down the Snapchat route by giving users playful customization options for visuals. On Tuesday, the Yahoo-owned company announced it is introducing stickers and ...