On the main page there is a side bar on the left entitled "Your Account". I think it would be nice if it displayed each member's last post info. Info such as when the post was made, and of course which post it was (with a link titled "Last post", leading to this post). This is just the same info that is displayed in each user's profile.
This last post info could perhaps be displayed under the "Total Posts Made" info.
Not an earth shattering idea, but i just thought it might prove to be useful to members who would like to have access to their last post info, without having to access their profile each and every time.