My sincere apologies to any of you who may have found a PDF download in your inbox that you never requested. It appears that the plugin software I use on my site to generate those is spamming somehow. I have now deactivated and removed that plugin, and I hope that will stop the issue.
Please accept my apologies for any emails you received that you did not request. Your email address is never added to my list unless you confirm that you want it, so you will not receive further emails.