1. No matter what I put in the title-field the maintenance-page always shows the line "Maintenance Mode" (and not what's in the title-field) when looking at the site.
2. There is, apparently, a difference between using the "www." and not in the url when visiting a site that uses this plugin. Without the "www." the maintenance-page doesn't show, but with it it does. Don't know if it's this plugin or WordPress itself that does this.
3. A preview of the mainentance-page would be a nice thing to have.