is a context-sensitive advertising network. There are 2 kinds of ads: pay-per-view and pay-per-click. Usually, your site will show pay-per-click ads which give more revenues. However, on most drupal sites, you will see ads related to which does not actually relate to your content. This problem often occurs on index page and its sub-pages. What are the problems?

1. Too many keywords and topics since each page consists of multiple teasers from many posts.
2. Misleading URL. The default front page is "node" so Google AdSense might guess that the page relates to "node vector" or "compute node". After a few days, Google will know compare "node" with other sites and decided that "node" usually means to blog site.
3. Missing meaningful meta tags. By default, drupal sites do not provide meta tags such as keywords and description at all.

To solve this kind of problems, drupal offers many capabilities to help us in SEO tasks like this.

1. Decrease Number of posts on main page to 6 or less (admin/settings/node).
2. Disable Clean URLs. (admin/settings) otherwise see next step
3. Enable path module (admin/modules) and create an alias to "node". A good alias is index.php or index_page.
4. Enable nodewords module (admin/modules)

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