I use ellipsis' (ellipsi? or is it like moose where it's both singular and plural?) a lot. Probably more than I should, but I find it to be super versatile. I use it to indicate pauses in trains of thought and moments where someone is struggling to find the right word, trailing off, and moments of silence of any flavor. I also use it when someone else has paused for a little bit and I'm not quite sure if they're waiting for me to respond or they're still typing -- to sort of indicate that, yes, I'm still there, I'm just waiting to make sure that they're done.
And then, there's my favorite:
"..."
"... ..."
"... ... ..."
Which I use for dawning realization.
And then, there's my favorite:
"..."
"... ..."
"... ... ..."
Which I use for dawning realization.