If you use Google Toolbar 4 (my review), you can add buttons for your favorite feeds. The feature is similar to Firefox's live bookmarks but it's better implemented: the button alerts you if there is a new post (the icon changes) and if you rest the mouse over an item, you can read the first phrases as a tooltip. Plus you can search the blog directly from the search box.
Now you can add Google Operating System to your toolbar. I've tested the button for the last month and now that Google put it on its gallery I wanted to share this with you.
* Google Toolbar 4 is available for Internet Explorer 6/7 on Windows 2000/XP
