If the process is fully automated, then I would say yes, this is a very good idea!
Agree that it's great idea. "Snapshot" demo (while being stable enough ) will be one more "live" motivation for those who still not sure to use latest version or not. And also more guys will be able to check new components(to add comments before release) or favourite issues fixes there. And RF will get more early adopters involved.
I like the idea but, as Ilya and Brian said, it has to be automated and stable.
The automation needs to be stable, but the snapshot deployments will depend on the code checked in.
I'll create a jira to cover this, and assign to 4.1!