On the subject of infinite scrolling - a user on another forum summed it up nicely:
“an awareness of when infinite scrolling is good vs bad. Infinite scrolling is good when the information is ephemeral, and changing all the time. Dating profiles, twitter stream, live updates.”
“But infinite scrolling is bad when the content is fixed. Like a forum. There is a cognitive clue when paging through a forum, how far you have read, where you are.”
For something like Facebook - infinite scrolling works because the site is ‘time relevant’. The latest posts are displayed first and older posts are displayed in date order - getting older and likely less relevant as time goes on.
For a forum like BA - this is not the case, especially the support forums. The important information could be on page 3 of 50, with all the later pages of discussion adding very little. Being able to reference to a fixed page/post number is very useful when trying to direct people to the important information (which is something else I have just noticed - replies within topics are not numbered - so you can’t say to a user “check out the node group in post #25”)