That's easy. Just build a LibX edition, configure Worldcat as a
catalog, and hit "make live".
It took me all of 60 seconds to build this.

It can be download from here:
http://libx.org/editions/download.php?edition=6B89FDBE

A version for IE can be downloaded from:
http://libx.org/editions/libxtestedition.php?edition=6B89FDBE.1

It supports cues that link to Worldcat on selected pages, autolinking
of ISBNs, and allows the user to search Worldcat via the right-click
context menu.

 - Godmar

On 9/26/07, K.G. Schneider <[log in to unmask]> wrote:
> Originally posted elsewhere. Despite the direction of my original
> request, I'm getting such good developer-level responses to this
> question that I'm reposting to code4lib to say if you are doing
> something interesting, I'm interested.
>
> Karen G. Schneider
>
> On Wed, 26 Sep 2007 13:13:32 -0400, "K.G. Schneider"
> <[log in to unmask]> said:
> > For a report I'm writing, I'm hunting around for interesting and
> > successful uses of end-user-oriented WorldCat affiliate tools and search
> > extensions (or interesting and UNsuccessful deployments...), such as:
> >
> > * WorldCat Search Box. Creates a WorldCat search box on home pages,
> > blogs, and other websites; available preconfigured in two sizes, but (I
> > think) can be tweaked for other configurations. Requires (free) WorldCat
> > registration.
> >
> > * WorldCat links with embedded search terms. OCLC provides syntaxes for
> > deeplinking to WorldCat results, suitable for embedding in courseware,
> > etc.
> >
> > * Other things: a Firefox browser search extension and a Yahoo! toolbar
> > for Internet Explorer that allow WorldCat searches from browser
> > toolbars, and a Google toolbar for either Internet Explorer or Firefox
> > that links directly to WorldCat results when it detects ISBNs on web
> > pages.
> >
> > (Interesting uses of xISBN, WorldCat registry search/detail, or the
> > OpenURL Gateway also welcome, but not as central.)
> >
> > I see some of these tools on various library websites, and use a couple
> > of them myself, but I'm looking more carefully for the benefits/payback
> > of these tools beyond "yup, it's on our website" or "I use it myself."
> >
> > Writing under the umbrella of biblio-officialdom I am --
> >
> > Karen G. Schneider
> > Research & Development
> > College Center for Library Automation
> > http://www.cclaflorida.org
> > Voice: 850-922-3159
> > AIM/Email: [log in to unmask]
> > _______________________________________________
> > Web4lib mailing list
> > [log in to unmask]
> > http://lists.webjunction.org/web4lib/
>