"like" :-)

I am rather busy at the moment, but I did a simple thing to use the like button, which doesn't do much but to put the like button and a send button. It's rather incomplete in the sense that there is no administrative interface to control the forums where the like button is used, but I guess I can also change it to make sure it's not used in private forums.
I have it working in a couple forums, but to release this as a mod it still will take a while.

Either the likes will be artificially inflated by repeat clickers or every topic would have to have fields added for every user to check whether they had already clicked it...massively increasing the size of the database.

I thought they wanted a counter, similar but apart from FB.

To make sure, will it be to "internally" like the topic/post?
or a Facebook Like Button
If internally (to use on the Forum alone), if we do have Like counter, we would probably need to "order" topics/forums by "likeness" as well, witch start to involve a like more than a simple code idea ...