At the moment you can like or dislike any post.
At the moment a like will mean your username will be attached to that post.
As far as I can tell there are no points or other indications to show whether a member has good posts or bad posts, it just seems to be a way of showing whether you like a particular post or not.
In your notifications area you should be able to control whether you are notified if someone likes a post you posted or dislikes it.
I will leave it on for a week or so to see how it goes.
Do not misuse or abuse this system please.
For now I will leave dislikes on but not displaying so if you dislike a post it wont reveal your username to prevent petty revenge activities... and as I said we will see how it goes.
I suspect in a weeks time I may be turning off the ability to dislike a post, or I might be turning the whole thing off... obviously you will get a say and any thoughts you might have can be posted to this thread please.
Please note that like and dislike are the default, so if you prefer we can change either to anything you like... they could be agree and disagree, or support and don't support, or even care and don't care...