Best answer by Jonathan
Thanks for asking, I'll try and answer :
On SoundCloud, if people follow you, it's that they've expressed interest in your music and/or content and are more likely to continue interacting with your content in the future. Therefore if you post something new, they will likely see it on their feeds and thus there is no need for users to directly send a track or playlist to various users nor to repost content multiple times. This allows you to focus on what really matters, your content.
For people who would potentially be interested in your content but have not yet discovered it, we've got that covered as well. Not only can they come across your content on various social media and across our numerous web integrations on desktop and mobile platforms, but our Recommendations, Suggested Tracks and Stations also allow people with similar tastes to hear what you've created.
The best way to get attention on SoundCloud is to be active by listening to, liking, sharing, commenting genuinely and often will increase your chances of getting noticed and thus promoting your content.
All in all, we try hard to make it simple, easy and fair for everyone to share their content with those who are most likely to like it, all while preventing abuse and spamming.
Hope this answers your question. :)
All the best,