What are your folks thoughts on re-registering domain names that have previously been used in the past for adult paysites and redirecting them to similar themed sponsor websites?

At the moment im currently going through a few lists i have of older paysites from the past 5+ years where the affiliate program has either closed down totally or, the program has closed some of their paysites and let the domain names expire.

Do you think that older paysite domains have a limited traffic flow going to them or do you think these types of expired domain names could be a good investment in terms of 'breakeven' on the cost of registration?

Regards,

Lee