Figured if there are threads on Magic and Pokemon, why not start one on Yu-Gi-Oh? It's still debatably the second most popular cardgame out there, under Magic, and is overall the best selling card game. Unfortunately, it has somewhat declined over the years, simply because the game is overwhelmingly complex, and takes a great deal of time to understand. Another major issue, is Yu-Gi-Oh suffers from massive power creeps, so you'd have to put dedication into Decks not Meta.
If you still play, feel free to discuss.