Tin cans are useful now, great for getting zombies out of buildings or away from a path that you would like to go. For the first 3 or 4 days of 1.7.1.4/.5 I was getting killed by zombies hearing me while I was prone through a building and kept going "that was a bullshit death" then getting pissed off and rage quitting for a couple of hours, then Id go back. Each day Id try a new tactic, die, get pissed off and quit for a couple of hours, and even said this isnt fun anymore. I believe that Einstein once said that Insanity is doing the same thing over and over again expecting a different result, with that said, if you die, look at what you could have done wrong and try something new. Also Rocket said that Zombies in the next hotfix wont hear you so well through buildings any more.