Some other blogging and content services can help protect visitor privacy. One of the best things you can do to ensure this is to fully self-host your blog.
Squarespace is a website building platform. The privacy of visitors to your site depends largely on your own settings, and you can delete visitor data. Select the least intrusive setting if you are going to use this service, otherwise they retain the ability to track minute data about your visitors and share it with third-parties.