Standard sizes for web graphics useful for ads as well

Here's a tip for your graphic designers.. if you plan on developing graphics for a new product etc... consider creating a number of industry standard sizes that you'll be able to use/provide for your online marketing efforts. The following are some updated industry standard sizes for online graphics according to the IAB (www.iab.net):

Rectangles and Pop-Ups
300 x 250 IMU - (Medium Rectangle)
250 x 250 IMU - (Square Pop-Up)
240 x 400 IMU - (Vertical Rectangle)
336 x 280 IMU - (Large Rectangle)
180 x 150 IMU - (Rectangle)
300 x 100 IMU - (3:1 Rectangle)
720 x 300 IMU - (Pop-Under)

Banners and Buttons
468 x 60 IMU - (Full Banner)
234 x 60 IMU - (Half Banner)
88 x 31 IMU - (Micro Bar)
120 x 90 IMU - (Button 1)
120 x 60 IMU - (Button 2)
120 x 240 IMU - (Vertical Banner)
125 x 125 IMU - (Square Button)
728 x 90 IMU - (Leaderboard)

Skyscrapers
160 x 600 IMU - (Wide Skyscraper)
120 x 600 IMU - (Skyscraper)
300 x 600 IMU - (Half Page Ad)