Spamming the "?" ping is the single most tilting thing you can do.
Next time you go to ping your ally after he gets caught, don't.
Next time you see your ally in a bush waiting for an opening onto the enemy team, but you decide you would rather spam pings, don't.
Next time you get caught, and your ally is able to get away, and you decide to spam the "?" because they didn't die with you, don't.
Seriously, nothing makes me rage on this game more than the "?" ping spam. Just because -you- don't understand that I don't have my cooldowns, or because -you- made a stupid mistake and got caught, doesn't give you the right to harass other people on your team.
It really sucks that it's the one form of trolling that we can't mute, and it's become very common.
Please either let us mute pings, or make ping abuse bannable when you can detect someone is spamming them.