Top 5 Online Advertising Websites

If you are in Internet you can see advertisements every where. It is very rare to see website, blogs without an advertisement. 
Billions of people use Internet every day. So companies started to advertise in the Internet. Advertising in Internet begun after introduction of world wide web (Known as www). 


These are the top 5 advertising websites.

1. Google                                     -  1,118 million visitors
2. DoubleClick(Google)            -  1,079 million visitors
3. Yahoo!                                      -     374 million visitors
4. MSN(Microsoft)                    -     309 million visitors
5. AOL                                          -     159 million visitors

Source: www.wikipedia.com

Adbrite is also an leading advertising website.