If you're going to be reading and posting poor quality material, then yeah it's a huge waste of time - if you're lucky enough to spot a few bright posters and participate in a little more intellectually advanced threads/forums then no it's not a waste of time - knowledge is power.
Moderation is key though - GS could be super addictive.
awwwwwwwwww
aaj GS per itna rehem??