Visgir1
Long posts are a turn off for me, I start to read and think can't be bothered.
On established long threads I read the first page... If it's gone on for several pages, I then read the last page and often the page before as the orginal post has normally drifted off, at a tangent.
I think that's fine, if you (generic) are just reading. I don't read every thread - I don't open some and skim others - but if I am going to comment I think it's just manners to read it all, so I am engaging with the thread, rather than just broadcasting my own opinion and not listening to others'. Maybe it's different on 'chat' threads where everyone is saying 'good morning', but even then, what's the point in doing that if nobody's reading?