The user reportedly entered the following code in one of her comments:
<lj user="ladyuamvar likes chili
She continued on with her comment and then posted. Note that she forgot to end the LJ USER tag with an end-quote (though quotes aren't necessary at all) and the closing > sign.
I believe that these missing items are the cause for the mess on the rest of the page.
I suggest that the HTML cleaner be re-adjusted to clean up some of these user errors. Is this possible? If so, I will post a bug to Zilla about it. I just didn't want to go right to Zilla without knowing that this is possible.
I guess another good question is - is LJ responsible for cleaning up user's typos? I thought a good rule of thumb would be "one user's comments should not affect the rest of the page." But is that LJ's stance?
Thanks for any and all input!