I relaxed the "needs to be member to read article" thing a few months ago - I am not sure if I did so for the White's article but it would be worth checking. Many member sign up to the site, read a few messages and then never return again. It's highly unlikely that the person who stole your hard work is a real member of this site. From the web page you sent me it looks like it's one of those sites that has popped up in the last few years where someone picks a topic they know nothing about and then takes information and photos from where ever they can. The goal is to make a web site filled with advertisements but that actually has content to draw in search engines and their users.