Pictures say a lot, when you have no word or when you have a lot to say at that time you could show picture to people without saying anything or just saying few words.
Pictures are also the best medium to memories the things and it actually helps your mind to create a image of the same in your brain which let you flash back easy.
You could browse our picture stream and gallery on Instagram and Flickr, and give your feedback on that.
Rashid Jorvee's photostream on Flickr.