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I have another very easy one for you. In JomSocial back-end, under the Dashboard, Themedesigner, Moods, it shows a list of images that can be inserted into a message. I would like to add some new ones and would like to know exactly what folder these images would need to be added to, the best image format, ie: .bmp, .png,.., and the best size for me to make them please.