If you login: We store your access token we retrieve from github on your computer as a cookie. See the Code
This is done so that we can access the github api in a verified manner.
This is purely optional and we never use your user information.
This is done to avoid server operations.
By Using the Blog: We store data we get from github on your available local storage. See the Code
This is done so that you may avoid as many calls to github as possible.
Without this, you would have to request github every time you wanted to view a page.
This is not optional.