I've gotten airdrops in the past few months of:
-Master contract token (MCT)
-Everpedia (IQ)
-EOS Network (EON)
-Atidium (ATD)
-EOSpace (EOP)
-ADD
-MeetOne
No idea what they are. Couldn't find much information. But I received good number of each. For instance, I received 1,000 MCT. They don't have much meaning without knowing what they are and I'm certainly not going to buy more unless the utility they were meant to have is extraordinary.
I agree that there is a hard sell for SMTs, because every new one will just be another coin looking for interest from people.