In today's world there is a lot of information about us that has been recorded. In some sense we're not completely forgotten because, at least in modern societies, we have birth records, death records and all manner of other details collected about us... mentions in newspapers, pictures, video clips, etc. But there will be some point in the future where all these details will inevitably be lost and all trace of our personal existence will be unrecoverable. In some ways that's sadder than anything I can think of.
I think of ancestors who were born before the advent of any sort of record keeping now are nothing more than nameless ghosts. Their only record may be some small fragment of DNA, and even then there's no guarantee that any of it was passed on after enough generations.