1st purpose could be entertainment. Imagine some kind of reality TV show in the future where "interesting" footage from private online video conferences would be broadcast on TV/internet to entertain people, laugh at others. I'm talking in the future when may be we'll all be dead or old or when people would sign non-disclosure agreements we haven't signed today.
2nd purpose: It could also be used for sociological and psychological research. Imagine all the data gathered from people's most private and personal conversations!
Do you think this is where things are going?
Are we the guinea pigs of the future of our species?
I thought you'd be the right crowd to brainstorm about this.