This is a basic survey really - do you use a screen protector to avoid getting scratches on the glass? If you do, can you recommend where to get one from (the ones I have are poor quality) and if you don't, do you find the screen on the Galaxy S is strong enough to avoid getting scratches anyway?
I have a bit of a habit of putting keys in my pockets along with my mobile phone and so have always used them in the past. However, the ones I have at the moment I was able to scratch with my nails so I'm guessing it won't be doing much protecting anyway! Also, because they are not very good, they seem to interfere with the brightness and sharpness of the screen - that's a real shame given how good the AMOLED is.
Your advice is welcome!