A moodboard is a poster showing a collection of images, texts, and samples of objects. It is a visual aid which is used in the planning process for a magazine. It is often used as a way of showing other people where you want your magazine to go - it shows them which artists will be in your magazine, and gives them an idea of what the genre you have chosen is all about.
My mood-board shows that I am making a magazine based on music which is currently in the charts (i.e, UK Top 40). People like Pink, Katy Perry, Lady Gaga, and Britney Spears amongst others are all people who are related to this genre of music.