Just to check, this issue is fixed now isn't it? Before the site went live it was the case that links were not underlined or differentiated from plain text so it was as you say ^, however when the site went live links were underlined. Since then there have been some tweaks (like to disable the blink effect for :hover) - it's possible underlining was left out in one of the tweaks as well but right now it seems to be there?
For the record my gripes with the unread post system is that when you go to mark forums as read, the link you have to click on is inside the forum navigation menu which is NOT displayed on the 'search results' page.
That's been bugging me too!
One other thing, and it's been mentioned by several people on the chatbox, is that the new smileys () are quite small and not very clear... any chance of getting the old ones back?