I had a look at the history, and yes it is different. It seems to show everything I have recently viewed. Generally this would be new posts, which of course is covered but the new posts button. It could also be something I have specifically search for using the search function. If that is the case I generally search until I have found an answer or am fairly convinced there are no posts covering my question. In both cases the history button is unnecessary for me.
I guess the bigger question is not necessarily do people like "history" or find it helpful, but how much extra work is it for you? Or is there extra storage/memory involved because the system now needs to remember who looked at what? If there are costs, whether they are financial/time/other, then is it worth it? If it makes no real difference, then it is a great feature for those who want to use it.
By the way, really appreciate the effort going into creating this forum and keeping it going. It is a great resource!