I've been struggling lately to place ads in my blogger template. The only thing that's really worked well is using the AdSense widget. But I've been wanting to place a banner ad in my template and blogger doesn't have a widget for that. When I have tried in the past, the size of my header has increased, but the ad won't display.
Well, I tried again today and finally got a helpful error message from blogger:
Your template could not be parsed as it is not well-formed. Please make sure all XML elements are closed properly.
XML error message: The reference to entity "o" must end with the ';' delimiter.Once I read this I realized the templates are having an issue with the ampersand (&) in the src attribute of my iframe element. If my ad code looks like this:
<iframe src="http://rcm.amazon.com/e/cm?t=development05-20&o=1&p=48&l=ur1&category=kindle&banner=0Y98S4SYN0MXZ8260582&f=ifr" width="728" height="90" scrolling="no" border="0" marginwidth="0" style="border:none;" frameborder="0"></iframe>
Then I need to modify it like this:
<iframe src="http://rcm.amazon.com/e/cm?t=development05-20&o=1&p=48&l=ur1&category=kindle&banner=0Y98S4SYN0MXZ8260582&f=ifr" width="728" height="90" scrolling="no" border="0" marginwidth="0" style="border:none;" frameborder="0"></iframe>
Notice I changed all the ampersands (&) to the entity reference for ampersand (&). Once I did that everything worked. It would be nice if blogger would update their documentation.