Common Web Banner Sizes

I never can find this information when I need it so I am writing it down:

Here are the common web banner sizes:

• Banner - 468px X 60px
• Leaderboard - 728px X 90px
• Skyscraper - 120px X 600px
• Wide Skyscraper - 160px X 600px
• Large Rectangle - 336px X 280px
• Rectangle - 300px X 250px
• Square - 250px X 250px
• Small Square - 200px X 200px

I took the name of these sizes from google as they were kind enough to name them