I don't have upto five, but the most common two have been mentioned already to you, we have this one you're on, bitcointalk.org and altcoins talks.com but if I may advise, you can only found this as the most important of them all, not only that, it's well moderated and serves more of value than as many as others that may exist including altcoinstalks, all you have to do is to understand how the forum works and then be in the best position to get the most useful information and benefits from it, because this forum is most moderated and you can't afford to see any other crypto forum than here.