The simplest way is to click on the New Posts button at the top navigation bar after you logon. This will bring up all new postings since your last visit. The list of "new posts" is specific to your account.
How about viewing yesterday's post? I actually remembered having read Jiajin's post on Prof. Gu's PhD recruitment criteria some time earlier, but can't find it again. To go Searching challenges my memory just as much...
