We've recently had some odd conversations in the CNET offices.

Laura Hautala, our privacy reporter, blurted out an assessment of the cost of skydiving lessons.

Abrar Al-Heeti, a general assignment reporter, described getting kicked out of a Casper mattress store in a suburb of Chicago after her brother's kids went wild in it.

They were part of an informal study CNET conducted to see if we could get Facebook to deliver ads based on discussions we had when our phones were in earshot.

The reason for our test: The long-running and hard-to-kill conspiracy theory that Facebook is listening to your conversations through the mic on your phone and then using this overheard dialogue to send you targeted ads.

But it turned out the reporter getting the Casper ad had visited a medical website after a back ache caused by a poor night's sleep.

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