This just in: Austin led the nation's big city job markets for the third month in a row. In fact, Austin was the ONLY large metropolitan area to add jobs between April 2008 and April 2009. With 3,400 new jobs, Austin employment grew at 0.4% during the period.Since job growth is one of the strongest drivers of real estate values, it is a positive development for Austin's downtown condo market and for broader home sales and prices.Here is a summary from the Statesman:By adding 3,400 jobs, Austin was not only ranked . . .