The exact same thing happened to me with http://viadeo.com/ , a linkedin clone pretty popular in France. The way it was worded hinted that I could chose from contacts who were on both my gmail contacts and viadeo users to connect with them. Not send an add to subscribe to viadeo to my entire contact list (who would ever want to do that??). It's such a horrible feeling when you realize what just happened. It emailed m…
ex-girlfriends, ouch. I initially thought this feature, while annoying, wasn't that big a deal. I've changed my mind.
But one was an ex-girlfriend.
Which was weird, because we hadn't dated long and had, to my knowledge, no social overlap before, during, or since the time that we dated (we met using a dating site). So, I thought, "How does LinkedIn know that I know her?"
And the conclusion I came to is that she had at some point recently uploaded her address book, and deliberately not chosen me as a contact, and then LinkedIn decided to try to nag me into initiating the contact that it knew we probably had.
Which is, to my mind, pretty evil. She didn't choose to contact me. LinkedIn basically used information out of her address book without her permission or knowledge. In an admittedly very minor way, LinkedIn decided to cyber-stalk her on my "behalf," without either of our permission.
(As it happens, we broke up amicably and no harm was done. But still, it was kind of gross.)