Ok, so this isn't quite a new site, it's actually been around for quite awhile. I've seen it go through some interesting changes but now it's really become a great tool for Etsy users.
craftopolis.com
You put in the name of your shop and on the "Shop Lovers" tab it will not only show you how many unique visitors you have had by day but how many shop page views and shop hearts. You have to connect it to your Google Analytics but it's well worth it.
There is a tab that tracks any "Treasury East" treasuries your in, so that you can go add a comment, always a good idea to thank the curator
The treasure clock tab keeps track of when you can go snag a treasury. The new Treasury East will let you make a treasury any time but the main Treasury is harder to get. .
Go check it out, it has a wealth of information on the shop lovers page that can give you some insight as to what days of the month you get the most page views and unique visitors.
Let me know what you think of it and if you have discovered other ways to use it.