Facebook continues to add new multimedia features to Messenger, its standalone chat app: the latest addition is the ability to instantly send (and play) videos of up to 15 seconds from inside the iOS app [and now the Android version too.] The update is similar to the ‘instant photo’ feature that was added in April. Combined, the features let users snap photos and record videos while they are messaging with friends without the inconvenience of leaving the app. That puts Facebook Messenger on a par with Line, WeChat, Tango, Snapchat and other chat apps that offer in-app multimedia sharing. There’s also another new feature – geared at those who like stickers — which allows you to send “an even bigger thumbs up” — Facebook playfully suggests this large icon is ideal for indicating that “you really, really like something.”