WLW is awesome! Did I not mention it many a time before? But here it is one more time. Today it was me trying to link to my last post (here again 
).
So I selected the word I wanted to use as the link, clicked on Hyperlink and chose link to “previous post”:
and here you go:
You can filter the post, which only makes it a kickass function. I salute the product manager who picked this feature!