That would depend on your sponsors.  Sounds kind of underhanded to me.  Surfers are easily agitated these days as it is. 
 
I know that most AVS's don't even allow for a lead-in that forces the signup page. 
 
What I mean by that is having a text story that builds up to the steamy bits, then has a  link that dumps you to the signup page.  
 
They are getting militant about "blind" links. 
		
	
		
		
		
		
			
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