This may or may not be off topic, but there really shouldn't be a reason to move apps to SD.
If you go back not too long ago, a lot of phones had VERY little internal storage. I believe the OG Droid had all of 256 MB (Compared to the ~2.4 usable GB of the Thunderbolt), so as anyone can imagine, that space starts to get eaten up pretty quickly when you start installing apps. Moving apps to SD was a MUST if you didn't want to max out your internal storage capacity.
With the Thunderbolt however, it really seems highly unlikely that anyone could have *that* many apps that there's not enough internal storage (and if you do, it may be time to go through and evaluate what apps you need/don't need). I have 60+ apps on mine, and have 1.6 GB remaining, well over 1/2 of the total.
Some people may have very legitimate reasons to install their apps to the SD card, but I also feel many folks think they need to based purely on poor advice. This, for example, is a common conversation I may overhear at my office:
person A: "Hey, check out my new phone!"
person B: "What is that, an Android? Good luck with that, I had one of those before I got my iPhone, but it sucked! -- Be sure to move your apps to SD and install Advanced Task Killer!"
person A: "Really? Thanks, I'll do that..." [walks away questioning all life choices].
Fact is, that advice may have been poignant 2 years ago when "person B" owned an android device, but frankly, it's not relevant now.
End rant.