I&#039;ve been using an aggregator on a website that displays RSS feeds from other sites. So many times, I get an error message that states there is an invalid character in the text. <BR><BR>Usually, this means the writer used something that hasn&#039;t been caught. <BR><BR>Is there a way for XML to catch this stuff automatically?<BR><BR>Any advice is appreciated. I can&#039;t figure all the characters that it won&#039;t accept.