It can be doable or non-doable. You should know that the forum uses the SMF software that has some drawbacks in terms of new features and so forth. Even it is doable, I think it is unnecessary.

You don't have to concentrate too much. What you must do to find OP's username is click on the first page, scroll up to the opening post and get that username.

It is a must-do step even you don't aim at finding OP's username. It's unacceptable when people write post to do what they call as joining discussion but don't mind to read what is raised by OP. If they do care about it, they should read OP, the first page and get username already. In addition, to catch what's going on in the dicussion, they should read the last page(s) of that topic as well.

I think such a system can be useful, specially in sections where the spammy replies outweighs the number of informative replies.

Often it can be confusing to keep track of the OP's actual replies in the thread because the number of posts replying to the First post is more than a single digit number. Some of the threads in the "Bitcoin Discussion" and "Altcoin Discussion" are made with genuine "coffeeshop-debate" idea in mind but ends up being a influx of a Black Friday sale.

Hence I would support the "OP's" idea here.

Since the current forum software that we're using has been heavily modified, I don't think it's worth the trouble to add that feature but having said that, it's worth noting that such a feature already exists in the new forum software ^{[AKA Epochtalk]}.

• e.g. check this thread

So it is not good at all. Because if you only look at OP post, what are you actually looking for? In order to discuss in a topic, you must read opening post, a few first replies and first pages, then a few last pages. If you only read OP and jump to write your answer, you might write unnecessary answer because others already answer it for OP.

Usually when a topic has about 5 pages, answer for OP question is mostly given.

Op is the center of attention in every conversation. If Op makes a post that asks questions, it is needful to track the Op easily at the middle of the conversation to ensure Op has gotten answer to his/her question.
If it's a debate, it's necessary to follow up the Op as the debate ensures to see how he aligns and re-aligns as opinions and counter opinions are made.

The idea of indicating an Op is not a bad one. When you visit social media such as facebook, that feature is used, it's indicated as "author".
I think it's worth implementing, unless there will be a draw back because of forum SMF.

I tend to agree with the suggestion.
Sometimes it needs to scroll up when you forgot the OP name, it will help us if you don't want to memorize first the OP username.  Though the idea isn't necessary much at least, it's hassle-free for us as a reader how to easily catch up or determine the OP replies.

But the question is, how to apply such a system to SMF which the forum used.

Alternative suggestion.
I've been currently using the chrome BPIP Extension to add further features that I liked, it's possible to add this feature on the BPIP chrome extension too while waiting for the result of the OP's proposal?

i would like this. my watchlist is pretty big and i often come back into some multi page thread ive been following off and on for weeks and have no idea who the OP is at that point.

I see no reason why we shouldn't have this and I would like to see it introduced if it can be done on SMF.

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Alternatively, what you can do is scroll up to the first post. Copy the name of OP, hit CTRL+F followed by CTRL+V to paste the OPs username into the search field. It works both on Chrome and Firefox. Every mention of OPs name will be highlighted for you on the screen. After that, just pay attention to the left side where the usernames are written while you are scrolling down the page and stop when you see the highlighted name you searched for. You can also click on the up/down arrows if you don't want to scroll down manually. If the thread has multiple pages, click on the All button before.

Nice tip. I have never tried that personally, but I will remember it for the future. I sometimes search for "merited" when I open a thread that spans across multiple pages. Especially in boards such as Bitcoin Discussion. Not all good posts are merited and not all merited posts are necessarily good, but it often shows if the OP got the help they needed.