They aren't "serious issues" with CC. They are the legal terms under which you are allowed/licensed the use of the copyrighted content. If you don't know the l

They aren't "serious issues" with CC. They are the legal terms under which you are allowed/licensed the use of the copyrighted content. If you don't know the license and the requirements of the license, how you can pretend to fulfill them? You are just waiting for a lawsuit and "ignorance is no excuse" in the eyes of the law.