My personal favorite in internet discussions is
There is absolutely no better way to express sarcasm online, I love it |:)
We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).
Oh, so there you are!