I have just had a look at IE8 and how to implement activities. I was hoping for microformats or data detectors within IE8, but what do we get instead? Proprietary code that just looks like the start of the browser wars 2.0.
What are you think MS? On the one hand you finally develop a browser that looks like it is standard compliant, then you go and add in your own custom tags!!! When will you learn!!????