Google Nest

When Google announced it was buying Nest for a few billion dollars we worried the search giant might use its new Internet-connected thermostats to serve up even more ads. Well, it turns out we were right. A letter from Google to the U.S. Securities and Exchanges Commission (SEC) confirms the company's plans to place ads on everything from thermostats to glasses, watches, car dashboards and even your refrigerator.

The letter in question was actually submitted to the SEC back in 2013, but is making the rounds today after being unearthed by The Wall Street Journal. Google warns that a number of companies, including itself, could soon serve up ads on anything with a screen—pretty much everything at this point. The statement was actually in response to questions over why the company doesn't show how much of its revenue comes from mobile, with Google arguing that it's too difficult to qualify exactly what counts as mobile in a world full of connected devices and displays.

With the Nest acquisition under its belt we wouldn't be surprised to see Google introduce ads to the device in the not-too-distant future. The company's also patented a line of free ad-powered taxis, and it's only a matter of time before Google ads make their way to Google Glass and Android Wear.

If Google gets its way we could be buried in online ads within the next few years, though on the plus side it probably means less monetary costs for the rest of us.