NEM's Twitter account is https://twitter.com/NEMofficial.  There is another Twitter account pretending to be NEM https://twitter.com/NEMofficiaI.  Those two accounts look identical.  The difference is the real Twitter account uses small "L" as the last character and the fake one uses a capital "i".

The fake Twitter account has offered users for discounts on XEM in private messages.  Please do not respond or make any deals. 

The real NEM team NEVER makes offers via Twitter, Facebook, or any other social media. In the past when we did so, it was publicly announced on the forum.