I've disabled all Popunder on Hentai2Read except Nutaku.net due to advertiser do not honor the terms we have agreed upon (no software, no scram and no close blocking). I've been trying to contact them for the last few weeks but it looks like they are not intend enfore the term.
As the result, starting from today Nutaku.net will be the only Popunder advertiser on Hentai2Read.com.
Nutaku.net is legal and safe website. They are working to bring a lot of Japanese Net Games (hentai and non hentai games) to English audience. If you haven't hear about them, you can check them out here.
What is popunder?
A type of window that appears behind the browser window of a Web site that a user has visited. In contrast to a pop-up ad, which appears over (on top of) the browser window, a pop-under is less obtrusive as it hides behind other windows. Pop-unders are used extensively in advertising on the Web, though advertising is not the only application for pop-under windows.