No. However media you upload with out an account will auto delete. If you want to keep your images, you should create an account. Its Free!

No. As of now STACK is free to use! we accept donations if you feel generous :)

Yes. however there are guidelines. The media must not depict underage people/models and not promote violence or harassment. STACK takes these issues very seriously and breaking the TOS will result in a Ban and reported to the proper authorities