It is the case that the Like button is currently only available in certain forums and we do not know the roll out.
It is the case that use of the button is restricted until you have completed a certain number of posts. As you may know, this also applies to being able to include Links and so on. We need to be sure that each newbie is genuine, as we are constantly banning 'Bot' posts or those who try to get free advertising.
PPRuNe is owned by
Internet Brands and they control the whole system. Any changes to software are done by them. Naturally we (the Moderators) have a constant dialogue with them and the staff that have responsibility for PPRuNe but we can only ask <STRONGLY> and it works out pretty well. Some of my colleagues have been involved since the site was established (around 2000, I think) by a pilot who was then working for VS, he is now retired but does check in now and then.