FA - Shitty Staff, ok fanbase, LOADS OF PEOPLE
DA - Somewhat shitty staff, horrible fanbase, but LOADS AND LOADS AND LOADS OF PEOPLE. also loads of drama. and 11 year olds.
Weasyl - Nice staff, ok fanbase that doesn't do much, and barely any people
Sofurry - Shitty staff, i don't even know anything else. Just nope.
Tumblr - It's not even an art site but it has ok staff, ok fanbase but LOADS OF PEOPLE

If you want me to add more to this please gimme an art sites name and I'll type and describe it xD