1) Makes running a business so much easier with the tools they provide.
2) It assures its customers of its security. This helps gain customer support and trust. (source)
3) The site continues to make better products like file sharing. This is capitalism at its finest! (source)
4) It encourages creativity through its products and advertising.
5) The site is upfront with its customers through the prices. One of the worse things in life is when there are twisted contracts and sly words to manipulate and confuse people. (source)
If you want to see the site, you can find it here.