Google Bookmarks is a no-brainer application. To have all of your bookmarks available via your Google Toolbar is great because you get the same set of bookmarks from one browser to another and even one computer to another. Taking that to the next level, you can include the iGoogle Bookmark gadget on your iGoogle page.
This is good stuff and I use these things constantly, but I have found one little weirdness.
When I bookmark a server within my firewall the bookmark works fine via the toolbar, but does not show up in the iGoogle gadget. Weird. Further, I have a tag of bookmarks that all point within my domain and the iGoogle gadget doesn’t even show the tag.