I came across this really neat site that you can use to advertise your etsy shop for free. You just have to make a profile with them and you can make postings of photos, videos, or anything else for all to see.
Here is a posting I just did on that website about my dresses --> http://www.craftstylish.com/item/71415/tarapparels-dresses
You should definitely check it out if you're looking for some free advertising.
Have a great day everyone!