How to get rid of that link in every single comment?? Isn’t is against WordPress plugin policy to not give an option to remove crap like that? It’s so ugly. With so many complaints in the forum about this plugin not working, one might think that the developers would focus more on getting it to work than putting links in everyone’s comments. Just a thought.
It is worth checking with WordPress that you are actually allowed to remove it. Sometimes plugin authors request that you properly attribute their work. It is possible that WordPress offer the plugin for free in return for this little advertisement.