Yes, it sounds like old school, but websites should be built with REAL content and not artificial content with seemingly useful but actually useless word combinations. But we also have to face the reality that the Internet is now filled with all kinds of parking pages pretending to be content-rich and tricking people into clicking in order to make money. What a shame! For someone who LOVES browsing the web (even as a hobby), this is really sad.
But the bottom line of Dave's question is that you canNOT just take content "from around the web". In "academia", this is called plagiarism; in the real world, it's copyright infringement, and you could be brought to the court.
If you really need some relevant and good content, you may want to try out some "open content" projects like Wikipedia, which allows you to use their content with due credits. Hope this helps.