On social networks, a host of new features are putting collaboration in the spotlight, as Facebook, Instagram, Snapchat and now Twitter have all introduced collaborative content options. Here's an overview of this growing trend that can help strengthen communities and boost advertising on social platforms. TikTok is once again the driver of this trend. The Chinese social media giant has made collaborative content popular with its “Duets” option, allowing users to post content using another user's video, already existing on the application. This kind of content boosts interaction between users….