EngiN33R has written
Since we're going to use features deemed worthy by other known services (like system), why not implement another one - thank users for their posts. E.g., should a person post something that is useful to a certain member, that certain member can express their appreciation via the thank you button which would be, well, whithersoever you put it.
Although I, and most probably you, realize that it might open new ways for spam and all sorts of various nasty things, it is still a good feature to be had, and the said nasty things, in my opinion, would not be too grave, should the feature be implemented.
Please express your opinion, and if you consider it useless - then so be it. Thank you for reading this anyway.