Socioeconomic classes spreading?

<p><a href="http://articles.moneycentral.msn.com/Investing/Forbes/TheForbes400.aspx?GT1=8579%5B/url%5D"&gt;http://articles.moneycentral.msn.com/Investing/Forbes/TheForbes400.aspx?GT1=8579&lt;/a&gt;&lt;/p>

<p>"A nine-figure fortune won't get you much mention these days, at least not on these pages. This year, for the first time, everyone on The Forbes 400 has at least $1 billion. The collective net worth of the nation's wealthiest climbed $120 billion, to $1.25 trillion. "</p>

<p>Wow...big jump! Does this mean our economy is booming or that the gap between the rich and the poor is growing? Here come the modern JP Morgans, Rockefellers, and Carnegies....</p>