Is Facebook personalizing ad options based on activity?

Remember when there were only a few hundred workplace targets on Facebook?

You could only target people who worked at big companies. If you were a B2B marketer, you might not be able to hit any of the niche companies in your vertical. But potentially, you could stilltarget folks who worked at Walmart in Bentonville, Arkansas (their headquarters) or executives who work at Enterprise Rent-A-Car and like a certain interest group or job title.

Back in early 2014, suddenly, the number of workplace targets exploded.