Like most browsers, Internet Explorer 7 styles RSS feeds so they appear more human-readable:

This is OK for normal users that happen to visit the feed URL. But developers often like to view the underlying feed structure, and this stylized version does them no good. Sure, developers could always choose "View Source," but that's often worse, because it doesn't properly align the elements:

Notice how there are no indentations or line breaks in spots that would deem necessary for easier legibility. Unless indentations and line breaks are intentionally written in to the feed source when it is generated, you'll always see this "tag soup" version of the feed.

A better version would be how IE 7 displays plain XML documents:

Notice how it cleanly indents and organizes the elements for easy viewing.

You can force IE 7 to always treat feeds in the same manner as XML documents. A feed is an XML document, after all.

Go to Tools, Internet Options, and choose the Content tab. Click on the Settings button underneath the Feeds section.

Uncheck "Turn on feed reading view."

Hit OK to close out the windows. Close and re-open IE, and feeds should now always show the clean structure, rather than the stylized version.