I don't read either site very often. I just visit GAF, scan that topics, and open the 1 or 2 that look remotely interesting. Sometimes there's a link to GS or IGN in there, but that's about it. I also visit the IGN PC forum because GAF is console-centric.
And then I'll visit some specialty sites like blogs.
Most games and gaming news nowadays don't interest me. I don't know if it's because of info overload, me losing interest in games in general, me not caring about games that won't come out for months, or games nowadays being the same ol' stuff. I'm certainly not interested enough to demand (boring, substance-free) daily updates from gaming sites.