YouTube is a powerful resource and having a visual arts category is a neccessity in my opinion. A majority of what I have learned was from other artists sharing their artwork on here and has been very encouraging and inspiring for me. I since have made a couple of my own galleries and posted them on YouTube which I am very proud to post my art work on here to get some exposure as an amature artist,it is very rewarding. An art category is essential.
As Merrill stated, artists are the most powerful communicators in the world.