Adsense, being the most popular advertising service provided by Google serving a million of ads daily. Adsense launched a beta version of responsive ad which helped the developers community to grow upgrade their sites to a whole new level. Further now Adsense have new bigger ad banners for sites having large columns. One is for vertical column and one for horizontal space or a billboard, whatever.
New ad unit sizes are 970px by 250px well it is clear that it is a bigger billboard, well a giant billboard. It is clear that it is obviously not suitable for 7 inch tablets, instead it is better to use in maximum 1024px by 768px screen size else overflow results in horizontal scroll.
Second ad size is 300px by 1050px, a vertical column ad which is best for sites with 3 or more columns because if you will ad in your normal sidebar then all content on sidebar will be neglected by viewers.
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