I find this so annoying like if they have something else to say or something
Most Helpful Guy
I don't know how it's used now, but that used to mean that they weren't done with their message yet. Similar to the IM message "so-and-so is writing a message". Then you just wait until they finish before sending your reply.
If people just send... and don't send anything after, that's seems kinda weird. But maybe it's supposed to mean something.0
Most Helpful Girl
Haha oh my gosh yes... Agreed... My ex used to do that often and it always left me confused.0