What Makes A Good Warning Page?

It appears that the industry is heading towards a more 'hardcore' tour style which means that processors are soon going to be requiring that all tours featuring hardcore content on them have a warning page on them.

So that being said, in your opinion, what do you think makes a GOOD warning page for a paysite?

Do you think a simplistic approach will work best or do you think the warning page should be content heavy?

Also, how do you think warning pages effect a paysites ranking in the search engines and also click thrus to the actual 'tour' itself?

Does anyone have a preference when it comes to promoting sponsors sites too when it comes to if they have a warning page or not, are you more likely to promote a paysite without a warning page over one that has one?

Your thoughts?

Regards,

Lee