Google larnches target advertising system

• Google launches a new interest based advertising for its network of websites including You Tube which is different from key word advertising.
  
• The new system is designed to record the interest of the users depending on the sites they visit and the searches they do on the net.
• Based on the interests of the user Google shall be offering tailor made advertisements which can be further refined by the users.

So the point is visit various sites and search the web on variety of topics of interest so that the ads Google may provide ads on varying topics for the blogs.