Dave McClure asked imagine for just a moment that you’re Ballmer, Semel, or Schmidt and you’ve got a couple billion burning a hole in your pocket– what companies would you put on your shopping list?. Interesting question. I would probably pick a ton of mobile companies. Flickr, Buzznet, WirelessInk, LifeBlog, Audioblog, WaveMarket, and the list would go on for a while. And that’s just the first wave of services pretty much, looking to mobilize the existing practice of blogging. There are companies like Caterpillar Mobile looking to evolve the models that started in the desktop-centric world into something more suited to personal devices situated in a larger environment. One or two billion dollars would sure get you a long way, but I’m not sure it would make it to complete buyout of the sector.