Alternative to referrer

Issue Summary

Hi,
this module is really interesting, thanks for creating it.

But what if the visitor has a program like norton antivirus that blocks referrer data ? It would revert to default them right ?
I think it would be better if theme would be selected based on an argument from the URL. This way there would be no problem at all with referrer. For example: http://www.drupal.org/frontpage?theme=theme6 or something similar.

This would avoid referrer blocking problem .

What is your opinion ? Would you implement such a feature ? I'm ready to commit some funds if necessary.

Cordially,
Brakkar