Rolling out a new website

I already have 3 sites up and running complete with rich pins. But it's been over a year since I made one. Back then, I was able to add 15+ boards and 300+ pins within 3 weeks to seed my accounts. Then I add my pins to the circulation while requesting group boards for membership. Then I finally add them into my own network of support accounts. Everything done within 2 months or less. So far, so good.

Now, question is to those who's been rolling out new websites while Pinterest have been making drastic changes. What has changed and/or what do I need to know?

One thing I do know is that it is much more difficult to make new images go viral, no matter the age of your domains. And I've been noticing alpha-numeric URLs to some newer pins that seems like it could go viral (perhaps being tracked?). These are not really a new website issues, but rather for new images. Still, I'll be running into these obstacles with a new site.

Enlighten me.

its all depends on your niche and how you designed image.

who said, new post doesnt go viral, i have seen many.

do proper research on it. but i accept it happens very rare,