Instagram users spent 257 minutes accessing the photo-sharing site via mobile device in August, on average, whereas Twitter users spent 170 minutes visiting the site via mobile over the same period, comScore found.

I could foresee this coming, I personally use instagram on a daily basis and I spend more time on instagram more than twitter. I predict these figures to keep going up as days go by. I find instagram to be hustle free, and mostly privacy, even though there are ways someone can download your photo. I have not used instamessage yet, once I do I will be able to rate it. So far, I give instagram 7.5/10.