This is interesting, how often does that happen ? Do these users know they can delete their posts (assuming no one voted on it)

It happens all the time, but even if you implement some kind of solution, you cant stop autovtes.

Automute the post by the user is again kind of useless as most of them won't do it anyway, hoping to get a penny or two still.

The other thing, with changing the community after postig, theoretically it's not a bad idea, but it can be abused and those who are willing to do anything for a penny or two, will do it. Imagine posting in Wordmappin, and when they don't get the vote they want, they move it to Photography and so on. Do we really want this? I don't know, this needs to be discussed to see pros and cons.