On it I put all my new contact sheets and recently printed images. It is placed across the room from my computer and put there on purpose, allowing me to view the sheets and prints often, in those moments where I need a break from looking at the screen. It is a good reviver and helps to formulate how and which images to print. So when I take the negatives into the darkroom, things run more smoothly.
I test whether or not the way it is printed and the paper used is right by putting the photograph on the board. Leaving it there for about three weeks or more. It also gives the print time to mature especially if I have used an FB paper. I have found that some of the fainter details show themselves when the print completely dries out. Along with any spotting that maybe needed. If at the end of this time I'm not compelled to reprint it. It becomes a print I'm happy to reproduce for sale.
I also use the noticeboard for editing sets of prints. This is a collaborative thing where anyone can move the order about or remove an image if they do not think it works. When this happens a discussion about the way the story should be told ensues, this a great way of getting the run of the pictures right.