Its to slow down ISLAMUSLIM from posting 300 tracks in 2 minutes. ;P Ya, its to slow down the amount of tracks uploaded my each person.
I like this feature, it discourages spam. However, if a certain author is uploading quality tracks he should be allowed to upload stuff scot free. Or maybe you can get coins at each 20 likes on your tracks or something like that.
We are currently looking to find the best method to reward creators for creating high quality tracks. This will likely be calculated through track play count, rewarding either discounts or coins.