Gosh guys, you're not paying attention. Post #2 had the correct answer: the APOSTROPHE sign: '

The original riddle: You don't notice me until I'm gone, but I'm right in front of your face (times three). What am I?

Read it now "gone": You dont notice me until Im gone, but Im right in front of your face...

 

Its the ' as in don't (x1) I'm (x2) as in "You dont notice me until Im gone".

I think this riddle is for the people that correct everyone on there or is it their spelling?!

edit randyjoy beat me to it.....