To be honest I like the thanks system as a member of the forum.
However as a mod I do remember how the system was abused last time it was used on here. I also remember the amount of hassle it caused and the amount of time it took to sort out. There was a large amount of bad feeling that was generated and factions that formed.
That was not the reason for creating this forum, this forum was created to form a community.
As a mod or an admin because of this I am not in favour of a thanks button.
Fora are there as places of discussion, I like people to discuss things, as a result there are always going to be a miriad of opinions, some of which will align with others, some will not. Some people do not post, some do. We all however enjoy the discussion even when we don't necessarily agree with anothers point of view. This also a method of learning and expanding our breadth of knowledge.
All posts are worthy of thanks even when we don't agree. Why?? Because this expands our knowledge, not just of the subject, but also the standpoints of a subject. This is a place for discussion. It doesn't matter if you're an old hand or a new one, asking a question that others know the answer to is informative because although the old hands may sit back and say "We've covered this before", others will have the good grace to answer, those who didn't ask that question and didn't know the answer will also then be informed. Keeping uptodate with subject matter is important, there are discoveries to do with primitive skills all the time and there are those who seek to innovate and improve on that which we already know.
Typing a quick "Thank You" is not a lot to ask.