Attention Blogsphere Bloggers

An awful lot of you have very fragile RSS feeds. I lose contact with many of you periodically because your feeds break with errors like this:

The XML page cannot be displayed

Cannot view XML input using XSL style sheet. Please correct the error and then click the Refresh button, or try again later.

Reference to undefined entity 'nbsp'. Error processing resource 'http://danfred.com/blog.nsf/stories.rss'. Line 42, Position 44

my spare power adapter... still no power.  I called Dell support and
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I'm not sure if you're inserting the non-breaking-space yourselves in an effort to make things pretty, or whether the software is doing it for you, but it's not valid in XML. There are other error cases that come up, but this is by far the most common. Your story excerpts either need to strip out anything that may be parsed as bad XML, or they need to be surrounded by a CDATA block.