Before that know about Interactive marketing which is one of the best marketing practice in the industry evolved from personal marketing as the market is expanding quickly. You would have heard as event based marketing or trigger based marketing and so on. As the name itself suggests it can be similar to one to one marketing mostly or even one to many marketing at times.
Let us see some best ways to use social channels and how one should be interactive in
Instagram - Use right hashtags like #art , #follow, #beautiful, #fashion (for which 487,010,088 involved) etc. post at the right time, steal your competitor's followers, use geotags for local delivery, use the right or popular filters like No filter, clarendron, juno etc. and if needed find more other ways that are available on top sites.
Twitter- Talk with your followers as most people are there for conversation, jokes, or education, Use advanced search options to reach right people listen to them and they will respond to you back, discover twitter trends, know the time of when to tweet, use retweets to reach new audience and also prefer other ways.
Youtube- Making a viral video doesn't make a win always so optimize for your audience by building a consistent channel with reliability, smart descriptions, build videos from eg. Online lottery solutions @ best budget around a single keyword or topic
Find more and more relevant tips on this topic on Blog of updates