Ad Formats.
Google AdSense Ad Formats-:
Text Ads,Image Ads,Video Ads,Link Units,Referral buttons

Text Ad Formats-:
Leaderboard (728 x 90),Banner (468 x 60),Button (125x125),Half Banner (234x60),Skyscraper (120x600),Wide Skyscraper (160x600),Small Rectangle (180x150),Vertical Banner (120 x 240),Medium Rectangle (300 x 250),Square (250 x 250),Large Rectangle (336 x 280),

Image Ad Formats-:
Leaderboard (728 x 90),Banner (468 x 60),Wide Skyscraper (160x600),Skyscraper (120x600),Square (250 x 250),Medium Rectangle (300 x 250),Large Rectangle (336 x 280),

Video Ad Formats-:
Square (250x250),Rectangle (300x250),Large Rectangle (336x280)

Indian Adsense Bloggers

Indian Government has ban lot of blogs.I know lot of Indians has Adsense running on their blogs.I think their Adsense Accounts has
been banded.