murray mint is correct in this case there is no hard and fast rule that applies to external links as they should be taken on a case by case basis for example you wouldnt want external links in football to all of the clubs of the world there would be too many lan parties however do have a distinct few well known lans dreamhack quakecon the i series etc and therefore should have links to these pages it is about what is useful for people not what sticks to some black and white rule common sense should prevail