Back in November, <a href="http://www.ustream.tv/">Ustream</a> Co-founder and longtime CEO <a href="http://www.crunchbase.com/person/john-ham">John Ham</a> stepped down from the company he had helped
<img src="http://tctechcrunch.files.wordpress.com/2010/08/map.jpg" /> <a href="http://booyah.com/">Booyah's</a> MyTown is still losing to Foursquare in the hype department, but frankly, I don't think