I don't quite understand the point of a Google Button.
Looking at yours, it seems to be a search shortcut. It wouldn't work here without modification because we use a post-based search form instead of a get-based search form. Also, non-members do not have access to our built-in search, and instead are directed to a Google site search that saves server usage on our end and allows us to generate a small amount of revenue on guest searches.
It lists the RSS feeds, too, but so should any decent browser (I don't run beta browsers, or betas from Microsoft, so I have no clue if IE7 lists RSS feeds like Firefox does). Even if a browser doesn't list the feeds like Firefox does, we have an RSS button at the bottom of every page that lists them.
If there is something I'm missing here let me know, but I just don't see much of an advantage for us in setting this up, and I don't see any functionality that cannot be duplicated with a simple browser shortcut.