Much like the work Cuck, "Cyber Cucking" is when a man or woman is at peace with his/her significant other having relationships with other men/women online, or if she/he sells pornographic imagery to other people online (either private or publicly).
This should not be confused or used in place of the term cheating, as in that case, the other person in the relationship is unaware of what is happening.
Person1: Hey, what happened to Spencer, is he still together with Jennifer?
Person2: Yeah, but she started to sell her body online, so he just hasn't been getting much private time with her.
or
Person1: Spencer is in a relationship, but his girlfriend talks with other men online and sends them nude photos in exchange for money.
Person2: Wait, she's cheating on him?
Person1: No, he's completely fine with it. She's just Cyber Cucking him.
A Person who thinks digital social networking is a waste of time, but wants to keep updated from friends and family who are into digital networking.
Hey Julie did you hear Sue is getting married? She just twittered me!?" "your joking! I don't use that Twitter crap I don't need to know who is making toast or going to the bathroom what a waste of time! Anyway what else did she say, can you have a look?" "your such a cybersucker! Get your own account!