Search for jamaica tourism on Google. You get a search result with the text Jamaica Tourism: 578 Things to Do in Jamaica | TripAdvisor.
Nowhere on the displayed page does the phrase 578 Things to Do appear. Google has chosen to show it in search results even so. It comes from the
<title> tag of that page.
Now take a look at results for the Google search for ebay bidding. One of the first results is for a business called Auction Sniper. The search result includes the text Auction Sniper is a free ebay sniper... That text is a misleading trick (Auction Sniper is not a free service) but this time the text comes from description meta tag. Nowhere on the Auction Sniper home page does the phrase "Auction Sniper is a free service" appear.
How does Google decide when to use the title tag and when to use the description meta tag? Both results seem misleading to me, yet they have been stable for quite some time. Is such a apparently misleading technique considered kosher by Google?