I thought it might be interesting to log how NTN is doing in the Alexa site rankings, now it's gradually replacing NBN. If you don't like numbers data, look away now.

Current (18 Mar 2016) global ranking positions:

N-N #58,964 ... dropped 10,132. The # keeps my data table nice and neat.
NBN 340,919 ... dropped 114,675 chart places.
NTN 588,767 ... up 1,573,292 places compared to 3 months ago.
NDN 746,951 ... down 405,171.

(And, just for the record, SelfieNudes is at 2.7 million, NGN is ranked 4.1M, the photo hosting site 2.7M, and BabeFocus 7.9M.)

I suppose NTN will overtake NBN at some point fairly soon. In the UK rankings, it already has. Now ranked 17,493 in the UK, while NBN has slipped to 70,768.

56.6% of the NTN traffic is from the UK.
21.9% Spain.
16.0% USA.

I find that regional breakdown a bit strange. More Spanish visitors than USA or Canada or Australia? But remember, the rankings data comes from those who have the Alexa add-on installed on their browser, so % breakdowns aren't really meaningful for lower-ranking sites.