You can use a free search form powered by atomz.com on your website. They are giving a simple html code which you put on your website and it will create a free search form on your site. Visitors can search your website easily. I just put the code on my smsbucket.com site and it is working absolutely perfect. They will send you weekly report with the keywords that people did search on your site. Google search form doesn't give you this feature For more details you can go to www.atomz.com