Unsure of who is a troll and who isn't?

I find it harder to keep track when there are so many using NASXXXXX names.  Is there a requirement to switch from these (temporary?) numbers after a while? 

I find it harder to keep track when there are so many using NASXXXXX names.  Is there a requirement to switch from these (temporary?) numbers after a while? 

I think it would benefit all (genuine) parties to lose the temporary names asap.  If I can remember a name, I can remember more of the background to an individual's queries and my responses will probably be more helpful.  All of these NASXXXXX names merge into one in my head so the continuity is lost or I have to waste time doubling back to check whether this was the same person that said that or whether this is something new (or even just trolling).  To me this means that this online community doesn't pull together quite as well as it might.  It erodes my confidence.    

there should be!