Art is... Everything

Today everything seems to be considered art. Acting, film-making, pottery,drawing, dancing, flower arranging, cake decorating, etc. As I said in a previous blog, I looked up the definition of art in the dictionary. Under this definition it mentioned something to the idea that  art can be used  to describe a skill in which something can be done. 

1. Perhaps in this day and age this definition of art might be more pertinent?

2. What other topic  do  philosophers struggle to define?