As far as I'm concerned, Miningsweden.se can be moved to the scam/ponzi list, due to pre-selling Antminer S9 units which are not officially confirmed nor announced by Bitmain in any way.
Bitmain denied that it will start sales of Antminer S9, but if MiningSweden is their key count can have better informations. I don't think that information about pre sales can be reason to call them scammers.