For the first time, it started doing very PC like things (restarting unexpectedly, applications quitting, etc...), so I got on the phone with AppleCare, and I have a hardware failure!
Thankfully, they were very nice, helpful, and they think they can fix it.
Despite being a recent switcher, I totally rely on my machine now! What am I going to do for the 3-4 days they have it? Arg!
And then take the post id of the one you want to point to, mine for example is
&postid=307940
I got that by right (or ctrl clicking for you one button mouse users) on the IP: Logged at the bottom right corner of every post, take everything from the & sign on and use that to replace everything from the & sign on in the origional URL so it ends up like this: