What is mic spam?  In my opinion, this is not mic spam.  This is called socializing.  In fact, if you don't want to socialize, Source has this nifty thing called a Mute feature.  Press Esc -> click on Player List -> find the person you want to mute -> click on their name -> press the Mute button at the bottom of the player list window.

Also, there's a radar on the top left of your screen.  If you're on the Terrorist team, your teammates will appear as red dots.  That means if you see red dots around the corner of the tunnel, like in spam2.dem, you don't have to throw a nade towards them, because that would mean you would be wasting your nade, like you did...  Furthermore, you should try not to bait your teammates, like you did near the end of spam2.dem.  If you'll notice, you all died when you tried to exit the tunnels into the CT spawn area.