I was once part of a forum that was really strong and thriving forum one day, and gone the next day.

In the following days, it was found out that the owner of the board had pulled the plug on the board and was selling it on Ebay, posts and all. He wasn't just selling the site, he was selling other people's posts. >_>

But yeah, that forum came back under new leadership and it's still active today even though I don't visit it much anymore. But yeah, for those initial few days after the first forum disappeared, I was pretty pissed off.