I think this would work well for the nights that we decide to get Bounty happy on the non-Merge games. I've seen up to 4 bounties stickied, It makes it hard to read the chat, plus people aren't forever asking for things to be stickied.

For loans, funds for trade, etc, this would cut down on spamming the chat with it, yes. Only problem I see with it is you'll have people saying "Watch the ad ticker, trade/loan/selling/whatever" all the time. No matter what it you'll always get someone who tries to go around it.

I think the numbers as far as cost and run time for the advertisements are good.