How much is , the place people go when they're not sure what they want, really worth? About three times what Facebook paid for Instagram. The newspaper consortium that owns the site is putting it up for sale, and they hope to make as much as $3 billion from unloading it.

I know, $3 billion! Who would have thought all of our searches for Land Rover Defenders, 1980s Toyota Supras, Porsche 944s and other random crap we fantasize about but will never actually buy were really worth that much?

But the reports that newspaper publishers' group Classified Ventures — which includes old media giants like Gannett, Tribune Co. and Belo — has already begun discussions with potential bidders for the site expected to include private equity firms and strategic investors. Cars.com is said to generate $400 million to $500 million per year, and a new owner could add $200 million annually to that.

The sale and stunning value of Cars.com is the latest example of what a huge deal middleman deal sites are these days, including and especially ones that help sell cars. Cox Enterprises bought back their share of in January to the tune of about $7.2 billion. As the U.S. gradually rebounds from the recession and starts to buy cars en masse again, sites like these are increasingly the tools people turn to, not their local newspaper classified ads.

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It's also worth pointing out that and seem to have failed, or at least scaled back for now.

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Speaking of which, the Journal also reports that if this sale goes through, it could effectively end the Classified Ventures, which has generates tens of millions of dollars in annual dividends for its owners and helped soften the blow of declining print revenue. It's also, sadly but not surprisingly, a sign of how much less important newspapers are to their media conglomerate owners than they used to be.

Let's hope Cars.com's new owner can keep up the success it's seen, and keep up the listings for all the oddballs we love. I'm gonna buy one of those old 6-Series BMWs one day. Really!