Message
Obscure XML character encoding: foo
Explanation
Although the validator recognised the character encoding that this feed uses, many aggregators may well not. This will most likely mean that users' attempts to subscribe will fail.
Solution
For maximum portability, convert the characters using either the utf-8 or iso-8859-1 encodings.
Not clear? Disagree?
You might be able to find help in one of these fine resources.
