I followed the directions for adding this widget to my blog but when I save the change the text for the widget shows up on my blog page and actually pushes the text for the center column out of line. The blog is http://www.financeisfun.wordpress.com and as of now I deleted the problem widget until I can get some help.
it looks like you are missing a couple of important pieces of the HTML. The code should read: <a href="http://www.feedburner.com/fb/a/emailverifySubmit?feedId=1211324&loc=en_US">Subscribe to Finance is Fun by Email</a>
Notice the < at the beginning and the </a> at the end.