Fauja Singh's tie to the Ontario Masters Athletics organization is, to the best of my knowledge, fully described in my previous article, "Records and Relays Before the 2011 Scotiabank Toronto Waterfront Marathon".
I also publicize my articles in my Xanga blog, although "A Masters Opportunity for an Indoor 3000m Race in Toronto" won't add anything you won't find here. The main story is in DeHaan Services.
First, keep your mind open to topics. I have to admit that I heard the announcement twice before saying to myself, "Now there's a topic"!
Second, do enough research to make an article with value for the reader. It was easy to find the Ontario Masters Athletics site, and I have a bookmark for Running Room. But it was trickier to find the specific race information pages in the Running Room site, mostly because I don't often use them. Since they don't often offer 3000m races, perhaps my article will indeed be useful to some readers.