User blog comment:Brandon Rhea/Making Ads Better: The Basics/@comment-80.229.116.230-20170117223555

I have a suggestion.

Decide on a specific size for each advert and stick to it, so the user knows exactly where they are going to load. An annoying thing is when the ads loading causes the page to move about. If you define an area for the ad before loading the ad, it will stop the page from jumping about.