The PM stays in your Outbox until it is read by the recipient.
I was actually going to suggest a slightly smaller font. Is there a size between the forum font now and the size that you type in when you're writing a reply? Because right now, it seems like the posts are just too 'bulky' and hard to keep your place when reading, especially with some of Lynn's longer posts.
Also, is there a way to reduce the size of the 'box' to the left of each post that contains the username, location, etc? It looks about 3/4" wider than it needs to be and reducing it would help spread the post's text out a little more. If that makes sense.