I added a new patent search.  Boliven offers various searches including a patent search.  Some of the features that are useful include the ability to download the file history as well as view a pdf of the patent in dual viewing pane.  Boliven also offers different analysis tools for the search results.

UPDATE: As of January 22, 2010, the Boliven website will be unavailable.  Apparently, the company has decided it does not make good business sense to continue with the website.  Accordingly, the Patent Pal has been updated to remove Boliven as an option in the Search menu.

UPDATE: I just checked the site on February 2, 2010.  It appears to still be up and running.  I had received an email indicating that the service would be discontinued.  However, since it is still functioning, I will leave the Boliven search in the drop down menu until it becomes inoperable.