Here's an excerpt from the DevX site:

"You can do a few things to effect a higher salary, though. Staying on the cutting edge is important. In addition to Visual Basic, developers who know XML make more than those who know other languages. Similarly, if you understand ASP and do multitier development, you're likely to earn more than your peers. Sadly, expertise in Visual FoxPro or PowerBuilder won't be your ticket to financial success."

I'm not trying to bring back the "demise of VFP" thread (which I don't believe) but it's also consistant with what I see is happening in the job market, sadly.