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Or like the article said, you just noticed the contextual eyeglass ads because you had just been to lens crafters and it seemed weird to you. Also, by contextual ads, do you mean the eye glass ads were related to context they were shown next to?

The other explanation is Facebook has data sharing agreements with the payment instrument you used for the wipes.

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I had been to Lenscrafters, but, there were no location services (no wifi, gps, or bluetooth) turned on...just my cell phone data.

By contextual ads, I mean, "News stream ad/in game ad" -- basically, anything that had been targeted to be sent to my device.

I believe I read something about Facebook using DataLogic info (which tries to tie payment instruments to advertising clients), but, apparently the music supplier for LensCrafters also has "Audio Beacon" technology for their clients to use (http://us.moodmedia.com/social-solutions/), so, it could be one of the two.

Rather than contextual, I think “native ad” is closer to what Facebook’s ads are versus Google’s old system that tried to match ads with the content they were shown next to.

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