Hello @skreza, the purpose is to help the community have a free programmer taking their focused coding requests. As my motto says a "community coder".
Imagine you have a need for parsing unique torrents from several popular RSS feeds. You can commission your specific requirements in a comment for me to code; then after completion all members of the steem community get the new functionality for free in the next SteemSoftware release, including those having the same need as you.