It seems like everywhere I look, one of the biggest tips is grenades.... But that's it. There's no metion of how to use them effectively. I'm having a lot of trouble finding grenade tips and strategies. I know that grenades are one of the "Golden Three Things of Halo," but just saying, "Use grenades," isn't enough.
Should I just be spamming every corner with grenades? Should I always save a couple "just in case?" Should I just use them anyway and trust that I'll run up on some more soon enough?
Post your most useful tips and tactics with grenades, and teach the rest of us n00bs how you "frag" with frags, plasmas, and spikes.