While many apparel retailers will likely offer their best coupon of the year, the news might not be as good for luxury retailers and flash sale sites. Last year, both Groupon and Living Social disappointed us with their Black Friday-branded sales, and we predict that it will be more of the same this year. And although both Saks and Neiman Marcus joined in on the Black Friday fun last year, it looks like they might pull back from sales once again in 2012.