I've noticed that pictures that get added to the image gallery may be missed by people that are monitoring the forums but not the image gallery. This 'announcement' thread is to allow people to alert the forum that they have added some pictures without creating a separate thread for the picture in question in this forum. A simple 'I've added new pictures to the [insert topic] gallery will suffice. Comments on the individual pictures can then be made directly when viewing the pictures.
Its still possible for people to create a stand alone MOC thread for the fruit of their labours if they wish and indeed I'd encourage this.
I'll start the ball rollling by noting that DJfonix has added some gantry images to the train section of the image gallery.