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Hmm doing a bit of searching, I wouldn't want to outright say "yes they are a scam" otherwise I'd probably get sued :P
But, I would just say, avoid them, instead.
See - http://www.binaryoptionsblacklist.com/broker-reviews/optionbit/
That's quite alright, we can use this platform for any questions :)
But yea, I would be very careful dealing with binary options in general, it's very easy to get carried away with them!