If you’re looking for a starting point, we covered Bartz’s dismissal and even discussed possible Yahoo buyers () last month. A few new pieces of information have come to light since then, including one or two interesting rumors that should give all interested parties some food for thought. First, I’ll share some disappointing, albeit not surprising, news for Yahoo fans. Internet ranking company comScore just released its September 2011 search engine rankings for the US. They paint an ugly picture for Yahoo. The venerable search engine lost nearly an entire percent point when compared to its st…