b What we have lost:
b 1) Direct actual loss of functionality:
b In the forum lists:
The ability to see which threads have new posts (and how many) since the last visit: obtained by the use of flags, numbers, different colour.
With it, you can immediately see and enter the threads that have grown, and the threads that you have visited.
Without it, you are groping in the dark, wasting a lot of time.
b In the threads:
The feature of going to the last read post to continue: default.
With it, you can just enter and continue reading.
Without it you are groping in the dark, wasting a lot of time.
The ability to open all posts without changing to a special view: obtained by pressing the Show All Messages button.
With it, you can scroll easily back and forth throughout the continuous thread
Without it, you have to go back and forth between pages, breaking up the continuity, unless you change to a special view (Print preview) that is lost as soon as you post.
The ability to archive a whole thread safely from the default view (possibly overwriting an earlier version): obtained by pressing the Show All Messages button.
With it, you can just archive.
Without it, you have to change to a special view (Print preview); if you forget, you will destroy the archived thread.
The ability to answer several posts at the same time: default.
With it, you can answer several posts freely; see below.
Without it, you have to choose to label your post as an answer to the original post or one other specific post, thus declaring a limitation that rules out all generality and multiple answers.
The ability to see other posts while creating a new post: default.
With it, you can scroll back to any post to reread and/or gather quotes while writing your own, thereby easily considering and possibly answering several posts; see above.
Without it, you can only see and answer one post, unless you exit your own posting using the Back button in order to see the others, and then you lose what you have written, unless you remember to select the lot and Ctrl+C before, and Ctrl+V when you return, using the Forward button.
b 2) Loss of efficiency, beyond direct loss of functionality:
b In the forum lists:
A compact thread list enabling you to overlook a large number of threads, often covering many days.
Instead, the thread list takes up some 2.5 - 3 times as much vertical space.
b In the threads:
A compact series of posts, only stating what is necessary, and keeping the focus on the actual posts, allowing relevant information about the poster at a click or a search.
Instead, the thread is dominated by repetition/unnecessary information in larger text size and actual posts in smaller text size, making the latter the most difficult part to read, taking up far more vertical space, possibly about 1.5 times as much (based on the same size text in the actual posts).
b 3) Loss of a timeless, mature, and unfortunately unique, forum design:
As is the case with designs in any area, a timeless mature design reflects the purpose it fulfills.
The lost forum format is casual, simple, and efficient in terms of focussing on the purpose and the actual content: user to user exchange of knowledge and experience within a community. This may be compared to a workshop/brainstorm, where everyone is equal and mixes with everyone else, and may be judged by actual contribution within the current forum, and may relax by informal OT in the form of joking, banter, and the like.
The new mainstream forum format follows the present trend of distracting focus from the purpose and content and directing it towards presenting the posters themselves. This may be compared to a formal conference, where everyone is ranked and decorated with medals/badges/ribbons according to some highly doubtful criteria across all forums, and every statement is preceded by a formal introduction/announcement, all of which is highly formal OT.