I know a group page is looking for its first 'real' page in it.
But think about this.
MySite has a Main Navigation Group Page called 'Link' and two redirect pages one to 'http://www.Telerik.com' the other one to 'http://www.sitefinity.com'
I only wished they would show up in the navigation.
As soon as I add any other real page the redirect will show.
I simply think thats bad design, and in no way clear to a client.
I think group pages never really worked as a customer administrating would expect. But this is simply another example how an easy task simply can not be simply done!
PS: Just getting annoyed once more about this and try to have Telerik review its position on GroupPages.