Thanks Marius for your nice reply! Ok, I will try to tone it down a little.
So, just to prove that I’m not lying nor confused, I can provide a screenshot or even better, anyone can test this out by himself. All they need to do is just to install this plugin, insert the java code:
a2a_config.templates = {
twitter: "Reading: ${title} ${link} by @AddToAny"
};
as suggested by micropat, change the @addtoany with your own Twitter handle, then go to an article and click on the Twitter button. After doing that, maximize the small Twitter popup window and have a look at the URL. It will always contain this tag no matter what: &related=AddToAny
It is because of this related tag, AddToAny will always be recommended on the post-tweet page (after you tweet) as a “Who To Follow” suggestion.
And this is just one problem which I discovered after doing a short test… God knows how many other sneaky injections are in this plugin for other services, such as Facebook for example…