An excellent example.
It's interesting that for years 'industry magazines' have produced glossy dungheaps to sell ads on. They can do this because advertisers want to believe that there is a publication that reaches 70% of all HR people in the tech industry or 45% of all OH&S people in the mining industry. In some cases there is such a paper. In many there just isn't. In the latter, the ads are carried by these idiot mags.
Now there's a way. Create your own. If you can.
They are a good example of what you could do in your niche industry.