Some iWidgets do require myLocation for it to pull your location. The_Durben creates most of his weather widgets to work with iWidgets, and his widgets require myLocation. The
widget I used on my homescreen required myLocation, so I had to find one compatible with iOS 6. I finally found it from a user on modmyi (king_o_hill) on his repo:
http://cydia.myrepospace.com/kohidevice/
I have a question though... I don't use iWidgets because it seems to work like Dashboard x from youtube videos I've seen. Is there an option to keep the Widget's stationary... and doesn't move away with the icons as you swipe through pages? That's what I didn't like about Dashboard x. Does Dashboard x have the option to keep widgets statrounary also? I usually modify the widgets to stay where they are when swiping pages.
EDIT: For those instailling myLocation, you might want to read king_o_hill's
instruction doc. He is very specific on how to install it.