Most of adsense publishers might have been aware that Google adsense ads were not displayed on Opera mobile browsers resulting in huge revenue loss. For e.g. from the stats of my blog, 20% of my traffic comes from Opera Mini browser which results in zero revenue. From Dec 2014 onwards, adsense ads have started to show in opera browser, so hopefully this will mean more revenue from the blog. Though there is no official news from google on whether this is a permanent change or temporary, it is good news for bloggers to extract more juice from their blogs.
Man, I had no idea Adsense wasn't showing on opera. Thanks for sharing! I haven't used that browser not even once in my life... Doesn't really affect me though, as I have very little traffic using opera
I have seen from my Google Analytics account that almost 50% of total website traffic comes from mobile devices, and 20% of that mobile traffic comes from opera browser. This has been a real pain for a long time.