Bubble share is something that anyone can get in and see. It helps because your letting others have  a chance in seeing what you have.It evaluates by seeing power points,it keeps moving like a slide show.It lets others have a view at what you got.Technically it helps people who really don't have an idea.It also lets people critic and see how they do and do not like your work.In my opinion i think a bubble share is a form of expressing yourself.Others opinions might be different.