If like me you are using the web interface of google to answer a mailing list, it will be top posting.
People were asking for top posting when in the old days , when messages were displayed in text format on a program that had no windows and you had to reload whole list of messages by title or by date to follow a conversation. so top posting was not very fun for them And I can understand this for sure..
Now are we still in that day and age?
IMHO anyone asking for such is just stirring the pot or searching for a reason to get an argument. ( I know some will tell me they don't want my opinion, ask me if I care ;-) )
Pierre
VE2PF