Windows Phone 7 does support tethering, you just have to know how to access it as it's hidden. As for being a flop, I don't think so. Granted sales are off to a slow start but as more and more handset makers are investing in it, it will sucessd, albeit slowly. Also, some really big names are releasing apps/content for it so if it were a flop, why would Verzion/Sprint et al be taking it on? No, I think you are hoping it's going to be a flop rather than speaking from a point of authority, I bet you have a iPhone or Andriod and never actually seen a WP7 device in the flesh so to speak.