Google has added a Search Box feature on blogger. It's a cool utility and uses Google's Custom Search Engine to dynamically search over your blog's content. Using this search box, you can immediately search not just your blog posts, but across all the link lists/blogrolls you've set up on your blog and the links you've made from your posts.

To add the widget:

  1. Edit your blog's layout.
  2. Click on "Add a page element" and configure the "Search Box" widget.