This is first of the SEO tips for drupal. Page Title is a small line of text in the HTML code which is displayed in Browser Title Bar. Its significance is huge for SEO as:

1. It is displayed on the top of the browser in the browser title bar
2. It is the heading of search results on google and most other search engines
3. It is used by search engines for important keywords for indexing the web page
4. It is the title when someone bookmarks your site

In drupal, there are two ways of managing the page titles:

1. Default automatic generation of Page Title: Drupal uses Site Name and Site Slogan defined in the Site Configuration for the homepage title and Node Title for the inner pages title.

   So, even if you dont want to manually manage the Page Titles, you can define the proper Site Name and Site Slogan in the Site Configuration and use keyword based node titles
    

2. Page_Title Module: This module not only extend the functionality of automatic generation of Page Titles using tokens, it also allows for defining custom titles for any node.

   You can download the Page Title module from http://drupal.org/project/page_title and Tokens module from http://drupal.org/project/token