This block allows users to search Google and have th results display inside the block itself. This means students don't have to leave the site to search for additional research materials. Links, when clicked on, will open in a new window.
When a search is conducted the student can also choose to see results from the web or based just on Google's search of the current Moodle site. If access to Google is open in your site settings this can be a very powerful tool.
This does require you to setup a Google AJAX search API key. Once the block is installed, go to Admin->Modules->Blocks and edit the settings of this block. Instructions on how to get the key and where to enter it are supplied there.
Update: Download link now fixed