I found Dice to be the best as far as getting called about opportunities as a programmer. Of course, it also depends upon how active the market is in your particular neck of the woods. Where I used to be (Greeensboro, NC), the market for programming has been dead since the great economic cratering of 2008. However, where I am now (Charlotte, NC), the programming market has recovered quite nicely, despite overall unemployment in the area still hovering around 10%.