Feedback!
First of all, thanks again for a great guide to TiBu. I'm brand new to this rooting thing, and your guide took a overwhelming (for me) process of backing up my apps and made it really easy to understand.
So I flashed a ROM on my (Sprint) Galaxy Nexus yesterday. It was the first time I flashed since reading this guide and using TiBu (2nd time flashing overall). The first time I flashed a ROM, I got some buggy behavior. It was because I wiped everything except internal storage. The folks over at XDA told me that because the Galaxy Nexus doesn't have a seperate partition for it's virtual SD card (instead it's just one big partition for "internal storage" and "sd card") I had to fully wipe my internal storage to get a clean flash. Sure enough, when I wiped my internal storage too (in addition to data, cache, and dalvik) and reflashed, then the bugginess went away.
I point this out because this adds the extra steps to your guide of saving your "update.zip" file and the entire "/sdcard/TitaniumBackup" folder to your computer, and then pushing them back to your phones internal storage after you wipe. I assume this wouldn't be necessary on other phones that have an external SD card or a seperate partition for a virtual sd card because those don't have to be wiped when you flash. It's important to make sure everyone understands the difference.
Personally I used Wifi File Explorer Pro to save the files to my computer (no cables needed) and then I used the cmd commands "adb push update.zip /sdcard/" and "adb push TitaniumBackup /sdcard/TitaniumBackup" (no quotes ... not sure if I needed a slash at the end of the latter command) to easily push those files back onto my phone after wiping through recovery.
I hope this helps someone.
The guys at that other forum have mostly no idea what they are talking about
Yes, your internal sd card can become corrupted over time and you might occasionally find that doing a complete wipe, internal storage included, might be good for your phone.. but this should be in extremely rare situations. I've done it twice since December, and have flashed around a hundred or more ROMs, lol. All of us regular crackflashers will tell you that when you do a full wipe to flash a new ROM you should pretty much never have to worry about wiping your internal sd, and trust me, we do this A LOT.
In your case, it is possible the bugginess you experienced required a complete wipe of the phone, but don't assume you should always have to do this. It should only be done in the most extreme cases... 99% of the time a normal Wipe data/factory reset followed by a system wipe before you flash a new ROM will be plenty to ensure a bug free experience. Hope that helps clear things up