OK, just had a quick look on my FB out of interest. The worst offenders on mine have so far today posted:
O1: 5 posts, including 2 boasting about a (very minor) work achievement, the standard reference to "hubby" one to remind us all how successful they are in relationships and 2 selfies. Every post begins "I did".
O2, the sports blogger, has posted 7 times about training sessions, but bearing in mind its only just past midday, has linked to Time Hop historical ones (twice), commented on how hard her sessions were yesterday (3 times) and appealed for people to meet her for planned sessions (unobjectionable). No selfies so far, but 3 yesterday.
O3, by far the worst, has only posted once, with 4 selfies, of a present given to her by an adoring fan friend. Complete with OTT smalchy comments about how much she loves her and how lucky she is to have such great friends. But yesterday and the day before featured in excess of 100 photos, not all holiday photos but many of her and her boyfriend in different poses, and selfies from different angles. Bad enough, but accompanied by comments reminding people of how great she is and her achievements. If she comments on anyone else, its only in relation to herself ie they are her friend and great, and popular and attractive and therefore reflect well on her.
O4 has posted 10 times on different sites about her business. She does this usually twice a day ie 20 different business posts, often with derogatory remarks about other practitioners, and reminding others how great she is in comparison.
There are more. But I can't bear to look.
Meanwhile I do have FB friends who are genuine high achievers in the world of work and sport, who never post anything more than about their ordinary activities in quite a factual way. Never any boasting. You would never know of their achievements if it wasn't for the fact they were relatively famous.