This is the response of a friend who placed me in a tree :

"Yikes, it took ALL Your outlook contacts? OH DEAR. I did not do any auto imports, just the folks I knew to be "networker types" but I also did not understand how the system operated and the email sent out. It is a major
flaw in this product which is a pity. This issue is being discussed in a number of online circles. Seems the company operates under the laws of Antigua, which seems like a major dodge to me. I have removed my email from visibility on the system".

"How to undo? I'll go peek at the software again to see how it works. I've also asked the guy who sent the link to me to see if he knows. He had the same problem as you.
Unfortunately, none of us caught the implications fast enough and, because we were sent the link from "trusted" sources probably weren't as skeptical as we should have been".