One Deal a Day...

I have been following woot.com for years and have gotten a few good deals off their site.  I've watched the site slowly develop from its cult following to being bought buy Amazon!  Now there are quite a few copy cats out there (ie. Gilt) with great deals that follow the same model.  So are these sites here to stay?  The one deal a day site is the virtual version of an outlet mall.  The success of Woot demonstrates the important of creating a brand or a unique identity that users identify with.  So what is the next "virtualization" of a physical activity?