[_pjee]

I think one issue is broadness. When a user issues a query there is often a choice of 1) low quality material that directly answers the specific question, or 2) high quality material about the subject more broadly. If someone asks "how do I fix water in camera iphone 3", if someone has set up a content farm for that exact question Google will probably send the user there, rather than to a broader repair page from apple.com. There's tradeoffs in search ranking, which is why I think it's possible to make a search engine that takes the opposite side of the tradeoffs that Google has.

Nice job on marginalia.nu btw. Your site is a good reminder that there is a whole internet out there that just isn't able to rank on Google for various reasons.