First off, I'm new to facebook and new on this forum, so please forgive any errors of protocol on my part!
I posted an add on facebook and was delighted to discover how the estimated audience size was presented as I refined my target audience. On my first run the audience was estimated as 1,480. A few days later I ran the ad again, with the same targeting criteria, and the estimated audience was showing as 940.
I targeted a specific age group, at secondary school, with just one "like", UK wide.
I find it difficult to believe that so many people "fell out" of the audience in such a short space of time, so can someone help me understand what might be going on here?
Grateful for any thoughts.