short link usually used for not have long "links" because in other place you have "limits" on characters
if understand what i mean, anyway same for archiveis
archive is is usefull for take a shapshot of "thread" or "post" and no one can "update" it
for example you write "babo you are an idiot" and some one take a snapshot, if you update and "delete" the insult i can view anyway (archive is is very usefull)
and is not a problem, if short url not allowed i can "remove" this feature and add another good feature for altcoinstalks, not a problem