As of this moment as I post this comment, (9/2/17) this is the monthly traffic per site:

• Steemit.com - 16,000,000 hits/month
• Decent - 208,400 hits/month
• Synereo - 65,200 hits/month

These are rough averages, but close enough.

It's clear to see steemit is definitely in the lead from a traffic standpoint which is good for all of us involved.

On the flip side, there could be an argument made that a little competition will help bring some visibility faster to platforms like steemit to the general public.

I guess then at that point it will come down to usability and differentiating key points from platform to platform.