Flounder has been "liking" all of his favourite art in the PnF Group, but he didn't realise that his "likes" weren't the same as votes?

Bilby explains to Flounder that if he clicks on the image of the art he likes in the PnF Group, it will automatically take him to the Gallery, so he can "vote" on the art (as well as "liking" it in the PnF Group). Simples...