The "tutorial" concept is to explain, show, demonstrate, help. You did neither. You gave a link, and told people to use it. You could at least have explained in details how it worked, how to install it, ... You could also use links and not just copy past URLs.
As it is, your tuto is more like "Upload game to dropbox with new account ! So, just create an account, install dropbox by referring me, activate public, and here you are !". Try to add more value, like the process of uploading a game, where to find the "public link" (if you want to help people to understand dropbox, you have to suppose they don't know how it works), ...
Don't be surprise to have reactions like you had with so little done...
And lastly, this section of the forum is for people who have questions to ask, help needed, not for advertising.