That hurts. I've tried to type "fbml html validation" in Yahoo and Bing to check whether these search engines correctly index Blogspot's sites... nada, zippo, nichts. Generally, when you type these keywords on Google you get one of my posts among search results. This is not a surprise, of course. I think that some kind of war is currently going on. Probably this is due to the existing differences between the various search algorithms or perhaps to a little revenge against Google. That is, why Yahoo and Bing should pay attention to Blogspot given that this platform is run by Google? However, that's a pity.