Originally Posted by RallyMcnally
that's the thing. Choosing one focused topic is the hard part. I have like 35 different topics I'm highly interested in. I guess I'm a jack of all trades. I want to go indepth and write articles/blogs on each different topic. I would develop them all as best as I could, but it just seems so much easier to create a domain like : rallyruger.com ...and have one blog..with categories on the side for each keyword/topic....then having 35 different blogs dedicated to different areas of interest..but I guess with wordpress..i would just have to sign in with One account name and create the different blogs..so it's not that hard...
Rally, I would really suggest against that. For one, your domain name factors in a lot on SEO and Adsense keyword relevance.
Now to your question about site-wide ads and page-specific ads, yes, page-specific ads do happen when the Google spiders have done their job and crawled the page.
I generally get life coaching or personal development ads like you can see on my first page: Personal Development For A Greater Life
On an NLP specific page I get NLP ads: NLP 101: 10 Plus 3 Beliefs That Create Wild Success - Life Coaches
And a talk about Buddhism led to some Buddhist ads: The Monk Talks: What Would Buddha Do When Bored? - Life Coaches
The question though isn't how you can make the page relevant to the Adsense spider, it's how you can make the ads relevant to your reader
A reader would be more likely to click on ads about Buddhism on a site that's specifically about Buddhism rather than a life coaching blog with a page about Buddhism. P.S.
If I could go back in time, I'd definitely not use the name 'Life Coaches Blog' because people who come to my site aren't usually interested in ads for for 'life coaches' or 'blog'.