I'm talking about the Unread Content. There's two options there, Expanded and Condensed. Expanded shows the thread titles, the sub-titles, and the first line of the new post, taking up 5 or 6 lines. If there are - for example - 7 or 8 topics with new posts, that's a lot of scrolling down. Condensed gives you just the topic title and who posted, in a single line, so you can see more or less all Unread Content on one page, which is what I have always used.
However, the Condensed button is borked, for me at any rate. Try it yourself and see if you see any difference between Ex'd and Cn'd. Let me know what you see.
If you don't know what I'm talking about I'll have to use screenshots.