The humble wee "Thanks" button.
It's been around for a year or so and was met with almost unanimous approval. It may have been slightly overused at first but as the novelty wore off it soon settled down to an 'acceptable' level of usage.
However, I'm think I'm noticing a slight fall-off of usage. On browsing the threads it is sometimes more noticeable by it's absence.
This could be due to new members not realising it's there or older members forgetting about it (I suspect the former) or it could just be that I'm British and we tend to say 'thank you' and 'sorry' far too often. We apologise to street lights when we bump into them. Sorry! ;-)
So how about a little more judicious use of the little 'Thanks' button. It saves on pointless 'Thanks for the post' comments and is simply polite.
BTW Please don't feel obliged to thank me for this post, the little arrow below is there to show you where it can be found, not designed to encourage you to click it.