How to prevent MoboGenie popups in Chrome? I browse around with many tabs open. Frequently, an ok/cancel dialog "MoboGenie - Play Now" pops up for attention. The host (of the popup) site keeps the dialog hidden till it pops up for attention. 

I find it difficult to single out sites which host this popup. None of them host suspicious or intrusive advertisements otherwise.
there is an application you can download for rooted devices called AdAway. 
 it's not in the market, but if you don't have a problem with installing third party apks, this is a complete advertisement blocker for both in-app and browser. 

https://f-droid.org/repository/browse/?fdid=org.adaway