I would say we might have worked at the same company, but there were so many companies trying that at the time we may very well not have.
Where I worked, it was an open secret that the CEO had an alter ego he used on the site. I have no idea if he knew that we all knew who that really was (I have to assume he did), but every played along.
By the time I had worked there it had been around for a few years already and once a quarter the head of our group set time aside for everyone to "engage" with it for an hour so that no one would be dinged on their performance review.
Where I worked, it was an open secret that the CEO had an alter ego he used on the site. I have no idea if he knew that we all knew who that really was (I have to assume he did), but every played along.
By the time I had worked there it had been around for a few years already and once a quarter the head of our group set time aside for everyone to "engage" with it for an hour so that no one would be dinged on their performance review.