My condolences to his family and friends.
A good example of the Werther effect is the string of copycat suicides in South Korea after an actress, Lee Eun-Ju, took her own life in 2005. After her death, the suicide rate of the general population in Korea spiked with notable celebrities also taking their own lives. Here's a frightening statistic from the LA Times "In South Korea, 15,413 took their lives that year [2009], or 28.4 for every 100,000 residents."
As an individual who has overcome manic depression and dealt with suicide personally and amongst friends, it is a difficult issue to approach and conquer, especially because when caught in a downward spiral everything seems to perpetuate it and nothing seems to help. It is not enough to simply ask if a friend is doing alright or has harmful intentions but it takes a person (family or friend) who can weather the storm with them. I feel that it is almost equally difficult for the person helping because they have to be willing to listen to and be understanding of the irrational thoughts that plague a suicidal mind. From an outside perspective, the burden of the troubled is vastly greater than the burden upon a helping hand but I think the cumulative process of helping someone can be equally detrimental and taxing. I hate to make a movie reference but the movie What Dreams May Come paints a good metaphor of the risks involved with trying to pull someone out of their sorrow, although not quite as dramatic.