Organic growth is definitely the most efficient and rewarding. While it requires the most effort & time, the quality of the audience it brings is much higher. At Kryptview. 3/4 of all users come from paid marketing. However, if you look at only the engaged users, the trend is reversed and 3/4 of active users come from organic growth. So I would only advise to take the extra mile and spend time & creativity designing partnerships, relationships and organic actions!