If its a GC to a store that you never shop at- let it go. If its a visa or amazon or something like these, maybe you want to consider it. You're supposed to claim it on taxes whether you get a form or not anyway. If you're worried about your personal info on such a small win though, call em, ask em if they really need that info or do they just need your info to show who the prize was awarded to for accountibility. Maybe they dont REALLY need your ssn. Congrats and GL.