Nice and Easy to use, but an undocumented "Feature"

I set up the plugin and everything worked fine. Then I just clicked a littlebit on the site an suddenly I was on a commercial qr-code generation site.
The qr-code is wrapped in a link. I did not find any hint about that in the documentation and the cursor is set from hand to arrow. It seams, that the author tries to smuggles some commercial on websites and so spreads his url. It is not very gentlemenlike.