I just added an In-Site search engine to my site. I was wondering if it would have any kind of negative effect on my rankings since it comes before everything else in the code view. Here is what it looks like http://www.health-marketplace.com

I wouldn't have thought this would cause any problems, especially with Google, which seems to be very good at working out what on a page is content, and what is simply navigational elements.

with respect to google, adding inbound links only distributes the PR around your site