I've set up a custom google search to where when you enter in what you want to search for, Google searched PD and only PD for what you're looking for.
The reason I feel this is significant is that frankly the default vBulletin search has been frustrating at best, useless at worst. Now we can all search for content within PD using the power of Google, and I think you will find better, faster results.
I've placed the Google feature up in the navbar under "Search". It's underneath what was already there. It's not very pretty to look at, but if I can improve that I will and the important thing is the service. I think this is a big improvement!