If you’re spending money on internet marketing, you should know this axiomatic truth:
Posting something on social media does not mean that anyone sees it.
Many fertility clinics spend money on growing their Facebook fan base or their number of twitter followers. Often, the number of a practice's "followers" or "likes" are too large while their message remains unseen. Equally, an infertility clinic's message won't be seen if its community size isn't big enough.