The Image Info box lets you display how much information you want to provide about each image on your website, this could just be the caption, or title or the full list of metadata. You can use the edit tool in the drop down menus to adjust and edit this information.
Output settings then lets you determine the image quality and lets you add a copyright watermark if you want to.
Finally the Upload settings allow you to connect to an ftp server and upload your images directly to the web through Lightroom without the need of an external ftp program. You can select the subfolder and file path and a separate dialogue box will ask for server passwords and so on. Clicking the upload button will automatically send you gallery (after the JPEG from RAW conversions have taken place) to your web host. Alternatively you can Export the gallery to your PC and upload them manually.