thirty-two degrees fahrenheit

ellipsis \i-LIP-sis\, noun:
three dots used to show an omission in writing or printing; the omission of a word or words in text

Ha. I use ellipses all the time.
...
See? Right there!

But seriously, I do use them quite often. Most of the time while talking over some instant messenger as my only thought.
It's a good way to signal a pause, like if someone says something I'm not expecting or if I don't know how to react, I simply reply with "..." and it usually gives me a chance to think of something else to say.

So...yeah. That's about it.