1) Having an older family member - typically a parent - mortify, humiliate or make one uncomfortable through an online social media outlet that they have no business being on in the first place.
cyber-embarrassing
2) Spreading private information to a wider audience through Facebook, Twitter, MySpace, etc.
When you're so embarrassed by something you wrote via email that you are humiliated even though you don't have to see the person "in-person".
Drunk emailing a friend/co-worker professing your misspelled undying love only to have them reply 'Well thank you for that, I was very touched; however I don't think the entire office needed to be cc'd on that". Internet Embarrassed.