The_Big_K
Saying thank you could become a part of 'ratings'; and I believe we might just stop calling the system as 'ratings' system.
The decision on this is still pending and 'Thank You' could just become a part of it.
I think its not a good idea to embed anything more into the 'rating' system. Otherwise, time will come that everything that's required to be said will be present on the button's click, seizing the actual posting that could happen.
Introduction of addition filter could solve the problem. The 50 chars limit is good one, but people will obviously try to bypass it. May be, we can apply numerous filter at the point where the post is being submitted. Few examples are listed.
1. Periods more than 3 should be truncated to 3. Any other special symbol to be truncated to 1.
2. The most classic way of bypassing as I've seen on other forums is writing "50 chars limit" at the end of the post. So this must be filtered provided the rest of the content (excluding the bypass statement) is more than 50 chars because we may use the same set of statement in our discussion and system must be able to filter at proper times only.
3. Third strategy by the by-passers would be putting random junk like "asfdawrasdfasdfasf". We can restrict the size of a single word to some sensible amount alarming the system regarding the "meaninglessness" of the content.
And few more such things like that which are hidden from the user.
On the other hand, even with the introduction of thanks button, I don't think it'll be used by the people to whom its actually intended for. They will continue the same legacy.