Now that I'm calm and joking about it, let’s explain why this feature won't have the desired effect:
- People like to type "thanks". They like it so much that they type it as a tag to most posts.
- The buttons aren't prominent enough. This could have been addressed by the same tool-tip, no?
- There's a readily available solution: using regex on the comments so that posts containing
t(h)th?ank(s)anks?are reminded to use the upvote button. ("Why this is included on the list?" you may ask: because current rejection of the feature should have been an expected effect, yet is not a desired one, and this solution was not only proposed, SO already has content filter in comments, which was used for +/-1 comments. See previous post about it.) - Anonymous users say tons of thanks already via upvotes. They represent at least 80% of all votes. Last time I checked, that number was about right, although these anonymous votes are not displayed and don't change anything on the website. It's functionally equivalent to this feature and invisible, yet users continue doing it.
- "Thanks" comes from people that already have access to the standard voting mechanism. Remember, commenting anywhere comes with a 50 reputation requirement, meanwhile upvoting just needs 15.
- Allowing yet another avenue for saying "thanks" erodes the message: if the post was useful for you, upvote it!