And UBC Esports is VERY active in this zone, you don't have to be in UBC either... http://www.facebook.com/ubcesports?fref=ts They just did an MLG Dallas event with live streams on projectors etc... great group.
Post of the Vancouver LOL FB group and see whatsup.
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If you're considering doing online tournaments as well as LANs, I invite you to check out the site we built for that exact purpose Z33K.com. It'll let you specify a set of rules applicable to your tournament.
If you have any questions about how to organize a tournament in general I can help with that too.