When browsing a forum you are able to get a infobox that previews what the OP says for any given thread. Seems to be because the actual link has a html title containing the OP's text. However, when looking on the Active Topics page these html titles don't exist. (Subscribed Threads page also don't have the html title for threads, although there isn't much reason for those, imo)
GD
<a href="/forums/General/I-Love-Life/5-2265251/" title="Cinnamon Multigrain cereal, that is.">I Love Life</a>
Active Topics
< a class="" href="/forums/t_1_5/2265251_I-Love-Life.html" target="_blank">I Love Life< /a >
Mouse cursor is hidden in the snip but I am hovering over the same link)
Viewed from GD
Viewed from Active Topics
I believe it would be useful for those of us that browse via the Active Topics page - gives us more info to what a given thread is about before opening a new page.
Also mobile:
GD
Active Topics