nope. they don't click on banners nor adsense ads. ( For example: try doing a webmaster/webdesign/seo, etc related niche directory and try to monetize only with means mentioned in the original post.)

What works well with webmasters as target audience is a recurring subscription product / service that solves a problem for them.

Don't tell people, I use a couple of "free" services that have just that business model. Luckily I don't depend on them

I am assuming conventional routes like Adsense or banner ads may not work because the audience is highly tuned to be blind to such advertisements.

Here is what I feel is one of the most important aspects of monetizing information by AdSense or Affliate work: Content aimed at NEWBIES is profitable because newbs generally lack the basic tools, software, and hardware.

I can't believe I'm giving this insight away in a public forum because it's a gift to my competitors. NEWBS are gold. Take it and run. This is the last time I talk about this.