I am not sure the value of freebies but I do participate when they come along. A few months ago I submitted artwork for the Windows gallery for downloadable wallpaper. My art was selected and I submitted an entire gallery of designs that are all food related. Love that my artwork is out there, not sure if it benefits me as an artist or not.
But… I do think you have to share. Sometimes giving it away is what you do to get more eyes to see your work, and hopefully it turns into dollar signs. My artwork has appeared on calendars, in decks of cards and now wallpaper for computers. Will I keep submitting my work, yes. Will I make money from it? Maybe.
So, want to see my collection? Here you go: