@GhostPanda thanks a lot mate , i will follow your advice
No problemo, hope its helping but take in mind we are all still learning and these are just some things I do on my accounts to get them growing, and adsense earning ticking over nicely but depends on your niche.
In other reply you mentioned you drop to 400 UV's, this is quite normal for me when you start pushing more pins especially to the same boards traffic is already coming from, I tend to ignore dips in UV's in the beginning as you will notice overtime you peak higher and higher with UV's due to the shear amount of pins you have floating around Pinterest with your source URL's in.
If anything the peak at over 1,000k UV's you had proves the traffic is there and its just a case of setting a goal to reach that daily, when I do this I find instead of actually hitting the goal you end up blasting past it and peaking way higher towards 3,000 - 4,000 UV's which is when I start to really look at the Adsense CPC & CTR and begin playing around with ad types, sizes, layouts ect to squeeze a few more cents per person. Then continue growing those UV's via the boards and pins.
It only becomes easier the longer you keep consistent and improving it, then once you have a site pulling a decent income on adsense you simply rinse and repeat / create new accounts similar to the way I mentioned earlier in the thread and keep going until you have quite a few domains all firing Adsense earning. The great thing about Pinterest is new niches to get into are usually all over the place, you will notice on your travels big group boards on peoples accounts dedicated to whole communities or trending topics / interests that are easy to pounce on and make accounts for to start testing different stuff.