Thanks to a reader of this blog for pointing this out.
With NASA's budgets constraints, and with money being allocated to many useless projects (such as the ISS), many important programs that have a higher scientific value are being cut. The Gravity Probe B appears to be the latest casualty in all of this.
Luckily, just like the bailout of RHIC and Fermilab via private funding previously, Gravity Probe B is getting the same lifeline. Let's hope this is sufficient till someone realizes that for such a relatively small amount of money being spent, a number of extremely fundamental questions are being addressed here.