Invalid character in a URI: ‘ ‘ …#comments</comments>

My feed will not validate. My blog is: http://www.marketlikeachick.com

I receive the error below. I see what line it says it’s on, but I don’t know how to fix it. I’ve tried cleaning up the post by copying into notepad to remove all formatting and pasting back in, but it seems to be something else.

I tried deleting the post it was found in and validating again, but then it just found the same error in the most recent post. So it seems it is not in the post itself, but maybe something about comments??

Please help!! I’ve spent days searching every forum and help topic related but can’t figure it out on my own. Here is the error from Feed Validator:

This feed does not validate.

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line 23, column 100: Invalid character in a URI: ‘ ‘ (9 occurrences) [help]

… nal-can-attract-more-business/ #comments</comments>
^

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line 55, column 103: Invalid character in a URI: ‘ ‘ (9 occurrences) [help]

… otional-can-attract-more-business/ /feed</wfw:commentRss>
^

In addition, interoperability with the widest range of feed readers could be improved by implementing the following recommendations.

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line 81, column 0: content:encoded should not contain object tag [help]

<p><object width=”340″ height=”285″ data=”http://www.youtube.com/v/5hjeEAqNE …

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line 266, column 0: style attribute contains potentially dangerous content: font-family: “Calibri”,”sans-serif”; (24 occurrences) [help]

<p class=”MsoNoSpacing”><span style=”font-size: 10pt;”>Article marketing is …