i think there are cuz some of the new episodes ar avatar the legend of aang. plus there nomads so not all the airbenders were at the temples. it would be impossible to kill all of the air benders if they were so scattered about.
Well it where airNOMADS,... I think they only went to the temples to learn airbending ant then leave to the rest of the world so I think there are more airbender then just aang(or maby there are airbenders and they just don't know)
Actually the tatoos are no avatar thing, they are not even a regular air-nomad thing. The markings are only given to those airbenders that reached mastership.
if there is another airbender, the name avatar the LAST airbender would be wrong, which is kinda strange...
Not necessarily! In literature and films with a rather sad content (and being "the last" of something is rather sad), it is a quite common thing to choose a title that fits the main part of the story just to contradict it at the very end in order to bring hope.
I also find it rather reasonable to assume that there are still other air-nomads, either in hiding or not knowing of their heritage. After all Aang's main task ist to bring ballance to the world and the elements. Even if he defies the fire nation, if there would still be no air-nomads, then there could be no real ballance, and Aang alone is hardly able to repopulate a whole nation, is he?
I agree with kudugu, name of the show is merely a speculation And by wiping Air Temples, Sozin only killed monks and children (yeah that bastard killed thousands of children but no right one))), but not actually the nation of Air Nomads itself Part of them must be hiding, part of them probably forogot their roots Remember that nomads(!) in episode 22, The Cave of Two Lovres? I'm pretty sure their forefathers were Air Nomads. I mean their attitude, it has nothing to do with earth)