<a target="_blank" href="http://www.wolframalpha.com/">Wolfram Alpha</a> just announced a useful new feature if you plan to follow <a href="https://techcrunch.com/events/disrupt-sf-2012/">Disrupt San
<img class="alignright size-full wp-image-169530" title="w" src="http://tctechcrunch.files.wordpress.com/2010/03/w.png" alt="" />For the past several months, I've given <a href="http://wolframalpha.co