Did you notice any of these trends vanish? Did you even realize they were gone? Would you bring any of these back?

According to a lengthy Reddit thread, here are some trends that "quietly went away without anyone noticing".

 

 - Waterbeds

 - Facebook "poke wars"

 - "When you turned off the TV, how the image would shrink to a dot before slowly fading away"

 - Flash mobs

 - Traveler's checks

 - HQ Trivia

 - Using "ROFL" 

 - Planking

 - Ringtones

 - Those black plastic bases on two-liter soda bottles.