I'm sure there's an easier way, but if you go back into edit signature, just put your cursor in the middle and type the title you want - then delete the extra stuff off each end. I forgot to mention, if you want people to go to the last new post, you use a link like this:
So in your case, that would be:
*$%&*@# it cut off the full text. Basically after the word 'log' you put in
-new-post.html