Asking for location accuracy every time facebook app opened

Come to think of it, it isn't just the facebook app.

Using the FB app as an example, every day i am asked about my location settings etc. I just hit ok or close or whatever the button is. Just found a photo on my phone i took...

"Location Accuracy

Turning on Wi Fi will improve location accuracy.

Ok / Settings".

I click ok & all is good ... until the next day.

Never used to happen before i upgraded to iOs7 (was on iOS5). How do i stop this? It's irritating.