I only run a few IPFS nodes to serve as gateways... but they don't pine any content. The idea is that users can use the public gateways for submitting freely their content that will be available while cached in many gateways around the world... If someone wants to have their content forever available, then there's the option of installing their own IPFS node locally on their machine and DSound will use it and pine the content there to be available forever to the IPFS network. DSound cannot host any content to avoid having problems due to copyright infringement. Hope this explains a bit. Please join DSound discord server for more support... Thanks! :)