What's a bookmarklet?
The video below is a great introduction to bookmarklets. In general, a bookmarklet is a little web application stored in the form of a bookmark in your web browser. Clicking it usually performs an action for you.
Using The Feed My Inbox bookmarklet pops up a window where you can subscribe to any feed(s) on the page you are browsing. Simply drag the link to your browser bookmarks toolbar to install it.
Drag this Add to Feed My Inbox
Internet Explorer users
Instead of dragging, right-click the link and "Add to Favorites".