While Rick has every right to sell the site, with, as John suggests, a large number of active members, it would have been "the right thing to do" in notifying us of his plans prior to the bomb dropping.
As large as we think we are, I can't imagine that he got enough cash to put his kids through college or buy a new Porsche.
One possibility, given how much a great number of us have learned here, would have been to ask the members to pay a few bucks to buy the site ourselves. I do know the costs of maintaining servers and ISP charges, but he has been doing that for a long time. I would have been happy to PayPal him $10 or $20 to keep doing this. I can't imagine that a nominal amount (even a once-a-year fee) would be a hardship on most of this group. $20 is what we pay for a good end mill.
My other thought is that the buyer isn't doing this as a charity and didn't pay more for this site than they expect to recoup through advertising.
No feedback from the site owner/CEO is troubling.
I'm hoping to get his attention by starting a new thread "I turned off advertising on this forum"
If you are so inclined, go to your Forum Options and scroll to the bottom.
There is a selection to disable advertising"
After you've done this, reply to my new thread.