weird irrelevent websites in random search

[tremorviolet]

Sometimes I will search for a specific string of words and get a whole bunch of completes irrelevent websites that just happen to contain the words I'm searching for.

For example, I just did a search for "krill oil evidence" on Yahoo. search results.

A whole bunch of sites come up that have what looks to be a relevent quote. From the second link:

sinclair ross, patients took 2 g krill oil or fish oil daily for one month the behr paint ... There is some evidence that adding fish oil to standard antidepressant medication...

(italics mine)

The title of this page is "Behr paint painted dr scholls " and the web address is www.rosetime.com/olsen-twins-bo-derek-topless.

Link seven:

Spike angel tattoo Depressive symptoms associated with premenstrual syndrome have been shown to be responsive to marine oil extracted from Antarctic krill ibuprofen vs aspirin. ... There is some evidence that adding fish oil to standard antidepressant...

Page title is "Spike angel tattoo" and the address is www.drunch.com/common-thomas-paine-sense-test.

If you click on the links, you get porn pages. Obviously, this is a ploy by the porn sites to drive up clicks. My question is: how is it done? Are there servers out there with pages and pages of previously generated random words? It looks like somehow there must be a reference to a medical site somewhere. I also just noticed that none of the pages are cached. Were the web pages generated as a result of my search?