Most Effective Ad-Format Banner Sizes

In a study of the different standard ad formats available online, here is a ranking in terms of the most effective ad formats:

1. Rectangle 180×150
2. Half banner 234×60
3. Medium Rectagle 300×250
4. Large Rectagle 336×280
5. Wide Skyscraper 160×600
6. Leaderboard 728×90
7. Skyscraper 120×600
8. Half page ad 300×600
9. Full banner ad 468×60
10. Button 120×90