I'm not actively seeking new employment and am very happy at my current position. However, I am always (passively) interested in new opportunities, and am not going to ignore something awesome that falls in to my lap. A service like this is actually very valuable for someone like me.
That said, opt-in is the way to go. I definitely don't understand the seemingly contradictory point of view of them saying "we don't like recruiter spam either" and "we find ways for companies to send unsolicited requests".
So, I would fall under the categorization of "aren't looking for a new job", while at the same time don't agree with the opt-out (without an actual opt-out mechanism) nature of this service.
That said, opt-in is the way to go. I definitely don't understand the seemingly contradictory point of view of them saying "we don't like recruiter spam either" and "we find ways for companies to send unsolicited requests".
So, I would fall under the categorization of "aren't looking for a new job", while at the same time don't agree with the opt-out (without an actual opt-out mechanism) nature of this service.