@maxklein Would love some feedback on a specific case too. The tax-for-dummies book idea has value, but it doesn't fit into the "optimize for time" strategy you advocate.
For instance, while working in tax law for a number of years, I created an annotated Google Custom Search Engine for my own research purposes.
As evidence that it's an under-served niche, the website where it's published was cited by a UCalifornia Law Library and a number of other related websites as a useful resource for tax research purposes.
Besides adsense, how would you generate income for this?
I don't really know how ads work, so I've never actually used them. A tax search engine seems to me like an ideal place for affiliate selling of books on tax, and ebooks that other people are selling.
You have the terms people are searching for, just match a book to the term and offer to sell to them. Something like that, but I have no idea about the market.
Use as in optimised for them and actually made an effort to learn how to make things work with adsense. What I did on the video site was embed the code google gave and that's it. That does not mean I know anything about adsense.
I would imagine that he's selling information, i.e. they type in a credit card number or click a PayPal link on his website, and he sends them a PDF or .doc containing some information that is relevant to them.