Generally putting your service up for sale on a random domain name forum is one step above just shutting it down. It means you see no real hope for growth, can’t raise any money and don’t want to keep paying the hosting bills out of your own pocket.
The company won’t comment on the sale, which doesn’t show much business intelligence. Not commenting on rumors is one thing, but posting your company for sale on a forum and then not talking to users to explain what you are up to suggests that you are not very serious about building community trust. People may not treat whatever founder David Altschul does next very seriously based on how this situation is being handled. We’re putting it in the DeadPool for now; if it sells to someone serious about pushing the service forward we’ll update.