Rhonda - This is a great question! I think people may be asking more questions about them,(because we have so many distressed homeowners and so many opportunity seekers in the market right now), but I don't think we have more happening.
I have just written an article at http://www.budurl.com/lpgq
specifically on this topic. Since accuracy requires double checking, I will go to our local mls and see what actual numbers I can provide so we can watch this trend, if in fact there is one.
Bottom line, lease options & lease purchases can be solutions for sellers who do not need to actually close a sale immediately, and for buyers who may need some certain event/s to occur before they are truly ready to close a purchase. Our state legislature has come down hard on scams where unethical 'buyers' were posing as 'problem solvers' for distressed owners; the new laws require a very cautious and well documented process in this arena - especially for Realtors(c). That's another article!
I'll be interested to hear what other answers you'll receive to your question.