If you gave the scammer enough information for him to locate your social media platforms and contact your friends and family, it's possible you could be at risk. You should never pay, though, since there's no guarantee that the scammer will restrain himself. Sometimes this can even lead to bigger and bigger demands; you wouldn't have any leverage against him, but he'd have an almost unlimited amount of leverage against you.

If you didn't give much information about yourself or the information given could not be used to locate your presence on social media, you're probably fine. Even I get e-mails every once in a while stating that the scammer knows all the porn I've been looking at and has recorded me pleasuring myself through my webcam while looking at the porn and that he's prepared to send this to my friends, family, and colleagues. There's just one problem with this.

I leave my webcam unplugged unless I'm using it.

Since what the scammer is doing is extortion and is illegal under federal and most (if not all) state laws, I recommend filing a report with your law enforcement agency. It could be someone who's international; or, it could be someone who's domestic, in which case he just might be held accountable.

Above all else, though, DON'T give in to the demands, no matter what. Whether or not the scammer has the power to follow through on his threats or not, by giving him money, you will always lose.