you can only sponsor yourself, and that's only in the search, and only on rotation. you can facebook people by sharing a link (like mine). the sponsor link it gives you will only work on a blog or a webpage. plus if your just typing in their name as the sponsor - people would have to type an artists name to see them anyway - then only their stuff would go up, the sponsor would be pointless.
---Mike Savad
MikeSavad.com