It seems like this is still a probability function. Or wil…

I'm curious by what you mean by this. What are you calling a probability function?

The decision of whether or not it is worth the fee to twetch a youtube video. So some or many may eventually be posted which have little value to most people, simply because the likelihood that enough will produce ad revenue to make it worthwhile.

Is ad revenue the only value involved in someone twetching a link to a youtube video?

I see the value of sharing something you find interesting, the value of people's responses to it (likes, responses, branches included) and the value of others seeing it.

Not at all. I'm just saying that as Twetch grows and it becomes are more attractive option to marketers (ranging the spectrum from high value to spam) who primarily focus on ROI, there will likely be plenty of youtube (and other) crap links posted

I see.

Yes, I think some will attempt to use this platform in ways that are low value to most people. But that doesn't mean I'll have to see it. Or, I shouldn't have to see it.

Signal:Noise is the most important feature of Twetch, not "I can earn money."

Perhaps a different take...

There will be curators, and not all of them will fit my interests, but those who do will be well rewarded when they curate content well for their given audience.