Content locker ad networks

What's a good content locker ad network that you've had experience with? I had no idea content locking ad networks even existed until I tried signing up for AdWorkMedia. They rejected my application. At 40k unique visitors a month I thought I was pretty good, guess not. I'll probably reapply for that soon.

Anyway, I've read that Adscend Media and MGCash are reliable, but wanted to see if anyone here has used them for content locking. Also, if you've used any other networks for content locking that are good, post it here.

I'm looking for content locking specifically because it seems my visitors are more interested in the content on my sites than my ads (no doubt), and I was thinking of how I can use this to my advantage until I stumbled upon the idea of content locking and ad networks that support it. Right now I'm primarily monetizing with Adsense and Amazon Aff.

I have been with Adscend Media for 2 years and they are very reliable and I have been paid with MGCash. I haven't used those two networks now though because I'm on adworkmedia. I mostly combine all their offers with my own content locker to improve my conversion rate.

I'm pretty sure that content locker with adsense is a big no no for Google. If you really want to use a content locker with your website then I suggest you remove your adsense ads first so that it wont get banned.

Good luck!

Check out CPAgrip and cpa lead, both are good.