Oh, well, I’m sure the hidden link your plugin adds to the footer of *every* post and page is also only to help people.
Or is it just a lame attempt to trick people into doing some SEO for you?
I also wonder why the Plugin name in the meta data is “Youtube” and not something like “Embed Youtube”. So people who have installed the former “Youtube” plugin (which had been removed from the plugins repository) automatically now get “upgrades” to your plugin.
I actually claim that it’s the opposite of a “hidden link”, it is shown–at the bottom of everything. It doesn’t do anything for visitors. You can put all the help and instructions needed in the installation tab that WordPress provides for each plugin.
Having to edit a file to remove something that’s not doing anything for the user is a bit unusual. Instead, why not make it not shown by default and then allow an option that if someone wants to show it, then it can be shown.